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● Products
T H EE R MM O FFF LLLL UUU I DD AAA NNN AAA LLL Y S I SS SS YY S TTTTTT EEE MMM
Thermofluid Analysis Software
2
The Role of CFD in Engineering
scSTREAM and SC/Tetra
Valve-lift: 2mm 5mm 10mm
Figure. Example of comparison between analysis casesComparison of fl ow rate (pressure) at an intake port with diff erent engine valve lift
Thermo-fl uid analysis softwareThermo-fl uid analysis software is a simulation tool used for analyzing
complex thermal/fl uid phenomena. Since software simulation enables
predicting performance without creating a hardware prototype, the
tools can be used early in the planning state of product development
to sift through preliminary design concepts. Simulation can also be
used to predict performance of products where it is diffi cult to make
experimental measurements. In addition, simulation software can
be used to visualize invisible fl uid fl ow and heat transfer. This results
in increased engineering understanding while providing a vehicle for
communicating this knowledge to non-experts.
Thermo-fl uid analysis software is indispensable for "Front-loading"
product development to ensure the best product concepts
are identifi ed early in the design process. Design quality will be
improved during the conceptual design phase by conducting basic
studies of fl uid and thermal phenomena that directly aff ect product
performance. During the detailed design phase, analyses are
conducted under conditions similar to what the actual product will
experience. From this work, design engineers can understand the
source of problems that limit performance and investigate alternate
design solutions before production begins.
One of the foremost expectations of today's successful product driven companies is that they bring high value-added products, that meet customer
needs, quickly to the market. In addition, successful companies proactively identify application scenarios that could result in unsatisfactory performance,
product failures, customer dissatisfaction and/or develop design solutions that mitigate the potential risks.
What is important in product development?
Cradle off ers two diff erent types of thermo-fl uid analysis tools:
scSTREAM (and HEAT Designer for electronics cooling) and SC/Tetra.
scSTREAM and HEAT Designer use structured meshes while SC/Tetra
uses an unstructured mesh.
A structured mesh is simple and easy to construct. This mesh is
comprised of many small cuboids so it can only approximate curved
or angled surfaces. It is most useful for applications where tiny details
and surface curvature or angles do not have a strong eff ect on the
overall fl ow fi eld. Examples of applications for structured mesh
include electronics cooling, HVAC, and architecture.
Unstructured mesh contains more complex element shapes
(tetrahedron, pentahedron, and hexahedron). These elements
provide a fl exible way to represent curved surfaces. As a result,
SC/Tetra is used for applications where precise representation of the
geometry is critical. Examples of unstructured mesh applications
include fan blades and automotive aerodynamics.
DesignConcept
Flexibility in DesignFlexibility in Design
“Front-loading” Cost
Complexity ofProblems
RoughDesign
DetailedDesign
Testing/Evaluation
MassProduction
Figure. Product development process
3D CAD original shape
Structured Mesh Unstructured Mesh
Meshing with complex element shapes
Meshing into cuboids
2 types of meshing method
[ Thermo-Fluid Analysis ]
Where does thermo-fl uid analysis software come into play?
3www.cradle-cfd.com
Analysis Procedure
Preprocessing❶ Create analysis model, ❷ Set analysis conditions, and ❸ Generate mesh
SolvingFlow/thermal calculations are performed using input data created in the Preprocessor. During the
computation, calculation status can be monitored. The amount of time required for the computation
depends on the size of the model (number of mesh elements), quality of the model, and hardware.
A parallel solver is available for reducing the computational time of large-scale models.
*See page 10 (HPC Solution) for more information about parallel calculation.
PostprocessingThe solver outputs fi eld data for visualization using the Postprocessor. This permits examining fl ow,
temperature, pressure, and other analysis results. Visualized results can be converted to images,
animations and/or CradleViewer fi les for later use.
*See page 11 (Postprocessor) for more information about Postprocessor.
*See page 9 (Utility) for more information about CradleViewer.
In scSTREAM and SC/Tetra, analyses are performed using a set of three applications Preprocessor, Solver, and Postprocessor.
❶ Create analysis model
Import 3D CAD data
Model geometries in scSTREAM (and HEAT Designer) using a built-in modeler
Modify or simplify geometries to reduce computational load as necesarry
❷ Set Analysis Conditions
Set material properties for parts and specify boundary conditions (fl ow, heat)
❸ Generate Mesh
Set mesh size and density. Mesh generation is processed automatically.
Figure. Flowchart of an analysis ■ …User input operation ■ …Automatic processing
Preprocessor PostprocessorSolver
Creating analysis model・Importing 3D geometry
Setting analysis conditions
CalculationSetting mesh density
Visualizing resultsDrawing graphs
Generating mesh
4
Comparison of computation time between Cradle products
Unstructured
mesh
Structured
meshRoughly 65% reduction
Analysis model: Cell phoneLeft: Unstructured meshRight: Structured mesh
About the softwarescSTREAM thermo-fl uid software has serviced the electronics and architectural industries for thirty years. HEAT
Designer is based on scSTREAM and is specially developed for thermal design of electronics products. Both software
enable non-experts in the thermal sciences to conduct thermo-fl uid analyses with ease by providing modeling
capabilities and wizard-based interfaces for setting conditions. Moreover, consistent with anticipated needs for larger
and larger models, these software are already adapted for large scale calculations using parallel computations that can
accommodate up to one billion mesh elements.
Multiblock & Meshing
A complex model requires many mesh elements to describe its geometries. Multiblock meshing, which minimizes the range of mesh refi nement, is an essential feature for analyses of large-scale models.
Computing Speed
A structured mesh ensures high speed computations and superior stability. Structured meshes are ideal for simulations where fi ne geometry details do not greatly aff ect the overall fl ow fi eld and heat transfer.
Modeler
Includes modeling functions ranging from simple building blocks to a CAD-like modeler. Features pre-built fan and heat sink models for easy set-up without having to use complicated CAD models.
CAD Interface
A standard feature includes the capability to directly import native data from a variety of CAD software as well as intermediate formats such like Parasolid, STEP, IDF, STL, DXF, IGES, ACIS and Gerber circuit board data. Direct interfaces with Revit Architecture and ArchiCAD are available as options.
Collective Setting
A detailed analysis requires specifying parameters for all the parts used. Setting these conditions can be tedious and time consuming. A CSV fi le can be used to specify collective setting of conditions which saves time and increases effi ciency.
Windows®
Windows®, Linux®
Is your analysis tool useful in years to come?Meeting your increased demands in the years to comescSTREAM and HEAT Designer have proven track records for incorporating the
Drag & drop
Thermofl uid Analysis System with Structured Mesh
Collective setting
5www.cradle-cfd.com
Humidity, Condensation, Evaporation*1
A study of condensation and evaporation processes can be conducted by calculating the surface temperature of solid materials and air humidity. In addition, moisture transfer inside materials can be considered.
Free Surface*1
This function enables visualization of large-scale physical phenomena, such as Tsunami, that are not experimentally observable. Microscopic phenomenon such as solder paste movement can also be analyzed.
HeatPathView
Analyzing heat transfer is an important process in heat release designs. Heat transfer can be captured more intuitively using graphs for each part or each heat path.
Gerber data
Moving object*1
Multi-Fluid*1
Joule heating*1
Fan model
Particle tracking*1
Air-conditioner model*1
PMV, SET*, Ventilation effi ciency*1
latest leading edge technology.
Product contents
•scSTREAM (HEAT Designer) [STpre/STsolver/STpost]
•LFileViewA viewer tool for L files in text format that collects data at each solver calculation cycle.
•STtoolsA tool for reprocessing calculation results data files.
•CradleViewer A license free viewer for visualizing calculation results generated by the solvers in Cradle products.
•HeatPathViewAn assessment tool for thermal analyses with graphical illustrations of heat paths.
•WindTool*1
A tool that assists input/output for simulations predicting wind environment.
•BMP2AVIA tool that converts multiple BMP files into a single AVI file.
•CADaddinToolAn add-in tool for SolidWorks®, which enables setting of analysis conditions for
scSTREAM/HEAT Designer within SolidWorks®.
•PreCSVToolPreCSVTool is a tool that helps automatic, collective setting of material properties
and analysis conditions.
•User's Guide (electronic version)
•Sample data*These products are provided upon installation (downloading from the Web).
● Recommended applications
*1 Not available in HEAT Designer.
• Thermal and fl ow analysis inside an offi ce• Natural ventilation in a large space• Air fl ow around buildings• Tsunami prediction• Thermal design of a closed chassis• Thermal design of a chassis with a fan• Performance assessment of a heat dissipating fi n• Thermal design of PCB
6
About the softwareSC/Tetra is general purpose, unstructured mesh software that is effi ciency and high fi delity focused for solving fl uid/
thermal problems involving complex geometries. It provides a wizard based user interface that guides the user through
the step by step set-up process. SC/Tetra also provides a robust interface which directly imports native data from a
multitude of CAD software as well as various intermediate fi les. SC/Tetra contains sophisticated models for simulating
complex physical phenomena.
High speed, Automatic Mesh Generation
The mesh can be generated automatically after setting the size and density of the octants. The mesh generation process is adapted to parallel processing enabling large-scale meshing to be completed in a short time.
Moving Object (ALE, Overset, Dynamical)
Analyses can be conducted on fans and pumps that involve active motion of objects as well as passive motions where object motions are due to external forces.
CAD Interface
Native data from various CAD software can be directly imported. This simplifi es importation by eliminating the need to convert the CAD data into an intermediate format which can result in the loss of geometry information.
Mesh Adaptation Analysis
Mesh adaptation enables automatic optimization of the mesh size and density in regions where variations in fl ow and temperature are prominent. The user only needs to set the targeted number of mesh elements.
Compressible Flow Analysis(Pressure-based, Density-based)Analyses can be conducted on high speed fl ow (up to Mach 10), shockwaves, and rarefi ed fl ow at low pressure.
Windows®, Linux®
Thermofl uid Analysis System with Unstructured Mesh
Alleviating the stress of numerical analysis?SC/Tetra focuses on stability and speed. It generates solutions faster, giving you more time for innovation.
Automated generation of volume mesh based
on octants
Automated generation of prism
layer mesh
Before
After
Condition SettingsMesh Generation
CATIA
SCTprime
SolidWorks
Conversion to MDL
SCTpre
Shape Creation
7www.cradle-cfd.com
● Recommended Applications
Free Surface
Free surface calculations enable simulation of two-phase fl ows such as the formation of a milk crown created by the impact of a droplet or the sloshing motion in a fuel tank. Simulation of capillary actions can be simulated as well by considering the surface tension of the fl uid.
Prediction of Cavitation and Erosion
Simulation of cavitation (vaporization of the liquid) due to high speed rotation of a propeller can be simulated. SC/Tetra is also equipped to predict erosion.
JOS (Thermoregulation model)
SC/Tetra provides the JOS Thermoregulation Model which was developed by Prof. Tanabe of Waseda University. It includes JOS-2 which improves the accuracy of head skin temperature predictions with more detailed modeling. JOS can estimate skin temperature and sweating as functions of the surrounding environment including air conditioning and sunlight.
Wrapping
LES
Radiation(refraction, multiband)
Humidity, dew condensation, evaporation
Spray model
Aerodynamic noise
Porous media
Fluid-structure interaction
Product contents
• SC/Tetra[SCTpre/SCTsolver/SCTpost]• SCTjob
A tool for analysis job management.
• LFileView A viewer tool for L files in text format which collects data at each solver
calculation cycle.
• SCTtoolsA tool for reprocessing calculation results data files.
• FLDutil A tool for mapping analysis results obtained by SC/Tetra to structural analysis
input data.
• CradleViewerA license free viewer for visualizing calculation results generated by the solvers in
Cradle products.
• BMP2AVI A tool that converts multiple BMP files into a single AVI file.
• User's Guide (electronic version)
• Sample data*These products are provided upon installation (downloading from the Web).
Wrapping
Original
• Vehicle body aerodynamics• Thermo-fl uid analysis of engine rooms• Intake and exhaust effi ciency evaluation• Disc brake cooling analysis• Performance evaluation of rotating equipment (fan, pump)• Prediction of cavitation• Heat dissipation analysis of LC projectors• Thermal design of home appliances • Wind loading eff ects on buildings• Flow analysis of nozzles or exhaust openings• Pressure loss through air ducts
8
Automatic Cleaning
The automatic cleaning function fi nds defects in CAD data and automatically repairs interfering faces and multi-edges.
Automatic Defi nition of Material Properties and Condition Regions
Part names and colors confi gured in CAD can be inherited and used to defi ne material properties and condition regions automatically. This function is helpful when an analysis model contains many parts or is repeatedly used for case studies.
Extraction of Fluid Regions
CAD software is usually used to create the geometry of the solid parts. CFD is used to model the fl uid region surrounding these parts. The extraction function automatically creates the fl uid regions from the CAD data.
Spending too much time fi xing CAD data?CADthru can fi x problems with CAD data making it suitable for analysis without going back to the CAD software.
About the softwareCADthru is a data translation tool used to prepare CAD
data for CFD analysis. CADthru's robust functions enable
fast and automatic repair of geometric and topological
data defects that are artifacts of the CAD software.
CADthru also includes several data editing functions that
provide complete control of the geometry.
● CADthru is recommended when dealing with:•Shell models created in CAD
⇒Filled/Hollow areas cannot be recognized.
•Parts not modeled in CAD, such as resin and packing
⇒Gaps or holes aff ect physical phenomena and simulation results.
•Models with many detailed components
⇒Analysis scale becomes too large.
CADthru Workfl ow
CADthru diagnoses defects in CAD data, fi xes problematic features, and outputs model data that is compatible with Cradle products.
CAD model Analysis model
Importing CAD data
Exporting MDL data for analyses in SC/Tetra
Solid data modifi cation
・Solid assistant / STEP assistant
・Modification features
・Creation features
・Measurement features
・MDL Wizard (Automatic cleaning)
●Detection & cleaning of defects
- Contacts/Interference between parts
- Redundant parts
- Disconnected shell parts
- Abnormal geometries
●MDL conversion results report
●Automatic definition of material properties
●Automatic definition of surface/volume regions
Product contents
List of supported data formats
•CADthru•User's Guide (electronic version)
•Sample data*These products are provided upon installation (downloading from the Web).
*Names of CAD systems are, in general, registered trademarks or trademarks of respective companies.
File format File extensionCATIA V5 CATPart, CATproduct, CGR
CATIA V4 model, exp, session, dlv, dlv3
Creo Elements/Pro (Pro/Engineer) prt, asm, xpr, xas
SolidWorks sldprt, sldasm
NX prt
SolidEdge par, psm, asm
Inventor ipt, iam
ACIS sat
Parasolid x_t, x_b, xmt_txt, xmt_bin
STEP stp,step
IGES iges, igs
VDAFS vda
STL stl
DXF dxf
Windows®
After creating inlet & outlet surfaces, fl uid regions are extracted.
After diagnostics, interferences between blue and red surfaces are detected.
Interferences are fi xed by automatic cleaning function.
9www.cradle-cfd.com
LFileView is an application to view L fi les, which are automatically
output during Solver calculations. This enables monitoring the
numerical results (variables, maximum and minimum values,
averages, etc.) for each calculation cycle.
CradleViewer is a license free tool that enables analysis information
to be shared even in an environment without a Postprocessor.
Graphics and animations can be saved and distributed in the
CradleViewer format. CradleViewer can also be used to change view
angle, display scale,
and perform many
other postprocessing
viewing functions.
WindTool is used to increase the effi ciency of predicting wind
environments. It facilitates setting analysis conditions for sixteen
diff erent wind directions and automatically executes executes the
calculation of the
wind environment
criteria proposed by
Murakami*.
HeatPathView is used to facilitate thermal management of specifi c
parts. It is used to investigate heat balance and heat paths using
graphs. This increases the understanding of heat fl ow and leads to
increased confi dence in the thermal design.
FLDutil is used to map analysis results obtained in SC/Tetra onto
input fi les for structural analysis software such as ABAQUS, ANSYS,
I-DEAS, and NASTRAN.
FLDutil can also convert
structural analysis input
fi les to results fi les (FLD)
used by SC/Tetra.
Functions used by scSTREAM for parts confi guration can be used as
an add-in tool in SolidWorks®. This enables the settings of attributes,
material properties, and heat generation for parts within the CAD
software. scSTREAM (or HEAT
Designer) can be directly launched
from SolidWorks®. Settings
applied from the CAD software
are automatically passed to the
analysis software.
(Compliant versions: SolidWorks® 2008-2012)
Utility Tools
LFileView
CradleViewer
WindTool
HeatPathView
FLDutil
CADaddinTool
Analysis result obtained in SC/Tetra Map to structure analysis meshes
*Murakami criteria: Criteria for wind environment evaluation based on the estimated frequencies of strong winds. Estimates are made of how many days in one year maximum instantaneous wind speed (or maximum average wind speed x gust factor) exceeds certain wind speeds. From the estimates, wind environment is ranked in three categories.
Viewer Tool
Data Conversion Tool
Modeling Support Tool
STST SCTSCTHDHD
STST SCTSCTHDHD
STST
STST HDHD
SCTSCT
STST HDHD
STST
SCTSCTHDHD
…scSTREAM
…HEAT Designer
…SC/Tetra
10
Common FeaturesCAD InterfaceCradle analysis software can import native data from major 3D CAD software as well as import most generalized intermediate data formats. This eliminates the cumbersome process of data conversion.
HIGH PERFORMANCE COMPUTING (HPC) SolutionLarge-scale, high-speed simulation with parallel computing technologies.Parallel computing makes possible solving existing models faster, conducting more analyses, and/or solving more detailed models with a greater number of mesh elements. Large-scale computation is performed effi ciently using distributed memory processing using Message Passing Interface (MPI).
Name of CAD / geometry data Compliant software NotesCATIA V5 STST SCTSCTHDHD CATPart, CATproduct, CGR
CATIA V4 STST SCTSCTHDHD model, exp, session, dlv, dlv3
Creo Elements/Pro(Pro/Engineer) STST SCTSCTHDHD prt, asm, xpr, xas
SolidWorks STST SCTSCTHDHD sldprt, sldasm (2008-2012 include add-in support)
NX STST SCTSCTHDHD prt
SolidEdge STST SCTSCTHDHD par, psm, asm
Inventor STST SCTSCTHDHD ipt, iam
IGES, VDAFS STST SCTSCTHDHD iges, igs, vda
Parasolid, STEP, STL STST SCTSCTHDHD x_t, xmt_txt, x_b, xmt_bin, stp, step, stl
ACIS STST SCTSCTHDHD sat, sab, asat, asab
DXF STST 3D-face, polyMesh (ST only) , 2D (ST only)
XGL STST HDHD xgl (3D shape only)
GERBER STST HDHD phd, drd, gbr, drl (RS-274D/X, Excellon)
IDF STST HDHD brd,emn
Autodesk Revit*1, ArchiCAD*1, SHAPE STST shp (polyline/polygon)
ABAQUS, Design Space, Plot3D SCTSCT inp, dat, fmt, p2dfmt, p3dfmt, dat
NASTRAN, ANSYS, CGNS SCTSCT nas, cdb, cgns
Parasolid, STEP, STL STST SCTSCTHDHD x_t, xmt_txt (SCT only x_b, xmt_bin) , stp, step, stl
NASTRAN, ANSYS, CGNS SCTSCT nas, cdb, cgns
Arena: 70 million elements Projector: 25 million elements
6.1 13.6
26.5
48.4
70.6
96.2
6.4 12.7 26.5
52.7
74.0
108.5
0
32
64
96
128
160
192
224
256
0 32 64 96 128 160 192 224 256
Spee
d-up
ratio
[No. of cores]
Convertible: 74 million elements Sirocco fan: 32 million elements
14.9 29.6
59.0
115.6
175.8
228.1
13.3 26.5
52.6
102.8
141.3
188.5
0
32
64
96
128
160
192
224
256
0 32 64 96 128 160 192 224 256
Spee
d-up
ratio
[No. of cores]
Impo
rtEx
port
*1 Paid option of CAD (See page 12 for more information)* Names of CAD system are registered trademarks or trademarks of respective companies.
SCTSCT
scSTREAM V10 SC/Tetra V10
11www.cradle-cfd.com
PostprocessorViewing analysis results using the Postprocessor is a key to obtaining the understanding necessary to improve product design. In many situations, experimental measurements are diffi cult to obtain, especially those within complex parts or when exposed to severe operating conditions. In contrast, viewing results in the Postprocessor is always easy to do.
The Postprocessor can be used to visualize data in various ways to better understand heat and fl uid fl ow and provide a vehicle for sharing information. This leads to productive discussions and visual presentation of results. Within the Postprocessor, results can be displayed and compared. Results can be analyzed using graphs and tables. In addition, the Postprocessor is compatible with parallel processing, which enables fast and effi cient viewing of large-scale analysis results.
VB InterfaceCradle analysis software can be controlled from external applications, including Microsoft Offi ce, using the COM interface promoted by Microsoft. This interface is called the VB interface (VBI).
Using VBI, various tools can be created, depending on needs, to automatically perform certain operations. For example, a tool can be created to simplify the settings for an air conditioning analysis (see fi gure), or to automatically write analysis reports.
・Visualization features (examples) - Vector plot - Contour plot
- Streamlines - Pathlines (SC/Tetra only)
- Isosurface - Oil fl ow ・ Processing features (examples) - Automated creation of animation
- Storing displayed data
- Comparison and arithmetic operations between multiple
results
- Azimuthal projections (meridian plane view)
- Operations (integration, function registration)
・ Applications (among others) - Simplifying settings for air-conditioning analyses
- Writing analysis reports automatically
- Automating a series of analysis operations
- Automating a process of creating 3D model from 2D model
- Creating your original GUI
Comparison
Streamlinesw
IsosurfaceContour plot
Oil fl ow
Control VBIMicrosoft® Excel® Microsoft® PowerPoint®Windows® Internet Explorer® ,etc.
12
Individual Option Tools
Optimization Tool・Extension Option (Optimization)The optimization tool uses the Multi-Objective Genetic Algorithm
(MOGA). It enables optimizing geometries and/or boundary
conditions (design variables) based on minimizing values of
multiple analysis results (objective functions).
BIM-compliant Option・I/F Option for Autodesk® Revit®*1
・I/F Option for ArchiCAD*2
Native BIM-compliant CAD data can be directly imported into
scSTREAM with or without simplifi cation. This is an optional add-
in tool for BIM-compliant CAD software and enables assigning
scSTREAM analysis conditions for each part within the CAD software.
Then scSTREAM can be launched from the CAD software, and the
geometry and analysis conditions within the CAD software are
automatically passed to scSTREAM for computations.
Structural Analysis Tool・Extension Option (Structural Analysis)Fluid and thermal stresses acting on solid objects and their
resultant deformations can be calculated from pressure and
temperature information obtained from SC/Tetra. This option is
limited to linear static analyses.
Fluid-Structure Interaction Option・I/F Option for Abaqus®Fluid-Structure Interaction Option (FSI) is available between SC/
Tetra and ABAQUS. This enables simulating phenomena where
fl uid fl ow and object deformation aff ect each other.
STST
SCTSCT
SCTSCT
STST SCTSCTHDHD
*1 Available from Autodesk® Revit® V2013. *2 Available from ArchiCAD V15.
* MOGA and Kriging methods used in this product are based on research achievements
of Obayashi and Jeong Lab, Institute of Fluid Science, Tohoku university.
Response surface
BIM-compliant CAD software
Thermal stress analysis of a circuit board
Transient analysis of plate deformation due to water pressure
Distribution of optimized solutions
scSTREAM Pre
Native data
13www.cradle-cfd.com
Links with other software
Acoustic Analysis Software
The acoustics of aerodynamic noise can be analyzed using
SC/Tetra output data.
Visualization Software
Read, visualize and edit FLD data (analysis results fi le from
Cradle products) using other visualization software.
Optimization Software
Cradle products can be used in conjunction with optimization
software for automation and/or optimizing product design.
1D Simulation Software
Output data from SC/Tetra to 1D simulation software or vice-
versa can be coupled and used as initial boundary conditions.
SCTSCT
SCTSCT
STST SCTSCTHDHD
STST SCTSCTHDHD
Acoustic analysis software
LMS Virtual.Lab
ACTRAN
FlowNoise
.CGNSfile
Dataconversion
tool
Developed by LMS International (Belgium)
Developed by Free Field Technologies (Belgium)
Developed by CEDIC (Korea)
Visualization software
EnSight.FLDfile
Developed by Computational
Engineering Inc. (USA)
Optimization software
Optimus®
Isight
modeFRONTIER®
Developed by Noesis Solutions (Belgium)
Developed by Dassault Systems Simulia Corp. (France)
Developed by ESTECO (Italy)
1D simulation
KULI®
Flowmaster®
Developed by POWERTRAIN (Austria)
Developed by Flowmaster Ltd. (UK)
Optimus® has a direct interface with Cradle products.
Autodesk® Revit® is a registered trademark of Autodesk, Inc. and/or its affi liates in the United States and other countries.
All other product and service names mentioned are registered trademarks or trademarks of their respective companies.
14
Modeling
CAD data Interface (import)
Parasolid (.x_t), STEP, STL,DXF (2D, 3D-face), XGL, NASTRAN,
IDF, SHAPE,Gerber data (RS-274D, RS-274X)
Parasolid (.x_t), STEP, STL,XGL, IDF,
Gerber data (RS-274D, RS-274X)
Parasolid (.x_t), STEP, STL, DXF (3D-face),ABAQUS (.inp), ANSYS (.cdb),
I-DEAS (.unv), Design Space (.dat),NASTRAN (.nas)
CAD data Interface (export) Parasolid(.x_t) , STL Parasolid(.x_t) , STL STL , ANSYS(.cdb) , NASTRAN(.nas)
Primitives
Cuboid, Hexagon, Cylinder, Cone, Sphere, Slanted Plate, Point, Panel (Orthogonal,
Quadrilateral, Slanted), 2.5D solid part, Fan, Anemostat model, Pipe, Electronics (chassis, PCB,
fi n), Peltier device model, Heat pipe modeling
Cuboid, Hexagon, Cylinder, Cone, Slanted Plate, Point, Panel (Orthogonal, Quadrilateral, Slanted),
2.5D solid part, Fan, Pipe, Electronics (chassis, PCB, fi n)
Cuboid, Cylinder, Sphere, Panel
Geometry modifi cation
Boolean operation (Sum, Subtract, Multiply, Divide), Shape simplifi cation (Deformer, Filling
hole, Projection deletion, R fi llet deletion), Copy, Mirror copy
Boolean operation (Sum, Subtract, Multiply, Divide), Shape simplifi cation (Deformer, Filling
hole, Projection deletion, R fi llet deletion), Copy, Mirror copy
Detection/modifi cation (Overlapped and intersected faces, free/minute edges),
Repair of missing faces, Generation of faces by sweep, Wrapping
Registration of parts library ● ●
Mesh generation
Tetrahedron ●Pentahedron (Prism, Pyramid) ●Hexahedron ● (Cylindrical coordinate system) ● (Manual setting)Cuboid ● ● ● (When internal hexahedron elements are used)
Conditions
Easy set-up through wizard ● ● ●Preset default conditions ● ●Unused dialogs hidden ● ● ●Collective Settings to undefi ned regions ● ● ●Material property library (editable) ● ● ●Laminated materials ● ●
Operation and control environment
VB Interface ● ● ●Batch execution of meshing ●Macro for operations (history function) ●Customizable keyboard mapping ●Selectable mouse operation modes ● ● ●Zooming ● ●
Mesh
Structured mesh ● (Cartesian or cylindrical coordinate) ● (Cartesian coordinate) ● (Import only)
Unstructured mesh ●Multiblock ● ●Overset mesh ●Moving objects ●Mesh adaptation ●Discontinuous mesh interface ●ALE (Rotation, Translation, Stretch) ●Dynamical moving element ●
Numerical scheme
Finite volume method ● ● ●Pressure correction SIMPLEC SIMPLEC SIMPLEC (or density-based)
Convection term accuracy 1st/3rd order (QUICK) upwind scheme 1st/3rd order (QUICK) upwind scheme 1st/2nd order (MUSCL/QUICK) upwind scheme
Matrix solverMICCG , ILUCR ,
ILUCGS, FMGCG, FMGCGSMICCG, ILUCR, ILUCGS, FMGCG, FMGCGS
MILUCG-STAB, AMG,AMGCG-STAB, CGCCG-STAB
Steady-state/Transient analysis ● ● ●
Flow types
Incompressible fl uid ● ● ●Compressible fl uid ● ●Non-Newtonian fl uid ● ●Buoyancy (Boussinesq approximation) ● ● ●Multiple fl uids ● ●Gas mixing ● ●Foaming resin model ●
Turbulence models
Standard k-ε model, RNG k-ε model, MP k-ε model, Algebraic stress model, Linear low-
Reynolds-number model, Non-linear low-Reynolds-number model, Two-equation heat transfer (NK) model (high Reynolds number), Two-equation heat transfer (AKN) model (low
Reynolds number), LES
Standard k-ε model, Linear low-Reynolds-number model
Standard k-ε model, RNG k-ε model, MP k-ε model, AKN Linear low-Reynolds-
number k-ε model, GPC Linear low-Reynolds-number k-ε model, Non-linear low-Reynolds-
number k-ε model, Realizable k-ε model, SST k-ω model, MPAKN Linear low-Reynolds-
number k-ε model, Spalart-Allmaras one-equation model, LKE k-kL-ω model,
SST-SAS model, DES, VLES, LES
Thermal analysis
Heat conduction (fl uid/solid) ● ● ●Heat transfer (Convective/Turbulent heat transfer) ● ● ●Heat transfer (Boiling heat transfer) ●Heat radiation (view factor) ● ● ●Heat radiation (fl ux method) ● ●Panel heat conduction, transfer, radiation ● ● ●Insolation ● (Direct/Sky solar radiation) ● (Direct/Sky solar radiation)
Joule heating ● ●Mean Radiation Temperature (MRT) calculation ●
Diff usion analysisDiff usivity ● ●Sedimentation rate ● ●SORET eff ect ●
Index for ventilation effi ciency
Age of air, Life expectancy of air, Inlet contribution rate
●
Thermal control model PMV / SET* ● ●
Humidity/Dew condensation analysis
Relative humidity / Absolute humidity ● ●Dew condensation ● ●Humidity transfer in solid ●Vapor pressure under humidity analysis ●
Reaction analysis
Chemical reaction ● ●Combustion ● Eddy-dissipation model, PPDF ● Eddy-dissipation model
Solidifi cation / Melting analysis ● ●Thermal CVD analysis ●
Particle analysis
Marker particle ● ●Mass particle ● ●Chemical reaction for particles ● ●Spray model ● ●
Multiphase fl ow analysisFree surface ● (VOF method, MARS method) ● (VOF method, improved MAC method)
Dispersed multiphase fl ow ●Cavitation ●
Aerodynamic noise analysis
Ffowcs Williams & Hawkings' equation ●Weak compressible fl ow model ●Sound source detection method ●
Thermoregulation-Model JOS, JOS-2 ●Thermal circuit mode 2-resistor/Multi-resistor/DELPHI model ● ●
Flow conditions
Velocity ● ● ●Volume fl ow rate ● ● ●Mass fl ow rate ●Pressure ● ● ●Air conditioner model ●Fan model ● ● ●Wave generation, Wave dissipation ● (MARS)
Pre
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15www.cradle-cfd.com
Thermal conditions
Fixed temperature ● ● ●Amount of heat generation ● ● ●Heat transfer coeffi cient ● ● ●Contact heat transfer coeffi cient ● ● ●
Wall conditions
No-slip (Stationary wall) ● ● ●Free-slip (symmetry wall) ● ● ●Log-law condition ● ● ●Power-low condition ● ● ●Surface roughness ● ● ●
Pressure conditionsFixed pressure ● ● ●Pressure loss ● ● ●Porous media ● ●
User-defi ned conditionsVariables table ● ● ●User-defi ned function (compilation required) ● ●
Calculation control environment
Job management ● ● ●Monitoring the calculation status ● ● ●E-mail notifi cation of the calculation ● ● ●VB interface ● ● ●
Output post fi les Cradle post fi les(FLD, iFLD) Cradle post fi les (FLD, iFLD)Cradle post fi les (FLD, iFLD)
Field View, AVS
Output for third-party software
NASTRAN, ANSYS, ABAQUS*3, I-DEAS, LMS Virtual.Lab, KULI
Structural analysis ●
Drawing functions
Mesh, Vector, Contour plots ●Isosurface, Streamline ●Geometry display ● (Neutral fi le, STL fi le)
2D graph ●Mirror/Periodical copy ●Vortex center ●
Drawing position/ orientation
Arbitrary plane, Surface, Entire volume, Cylinder ●Streamlines, Isosurface ●Pathlines ● (Only SC/Tetra)
Arbitrary scaling ●Arbitrary pick ● (Scalar / Vector value)
Special eff ects
Oil fl ow ● (On plane / surface)
Texture mapping ● (On plane / surface)
Lighting, Luster, Gradation ● (Preset, Arbitrary)
Transparency, Water-like expression ●
Animation
Vector animation ●Cut-plane weeping ●Marker particle ● (Turbulent diff usion eff ect)
Automatic translation of view point ● (View/Focus points can be set)
Key-frame animation ●Animation interpolated between cycles ●
Analysis of results
Variable registration ●Integral (surface/volume) ● (Scalar/Vector integration)
Comparison ● (Clipping function)
Projected area calculation ●Automatic search of the local Max/Min positions ●Import of CSV data ●Automatic change of colorbar ● (Preset, Arbitrary)
Data image output
BMP, JPG ● (Size, Resolution adjustable)
CradleViewer ● (Support steady-state/transient animation, Attach to Offi ce applications)
AVI ●VRML ●
Operation and control environment
Loading FLD fi le with trimming ●Selectable help function ●OpenGL emulation ●VB interface ●Selectable mouse operation modes ●
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VB Interface: Preprocessor, Solver and Postprocessor can be controlled in VBA and VBS.
System Confi gurationProduct Compliant OS Recommended
environmentMeasure of analysis size
Compiler environment (User-defi ned function)
Windows XP Professional (32 / 64 bit)
Windows Vista (Business, Ultimate, Enterprise)(32 / 64 bit)
Windows 7 (Professional, Ultimate, Enterprise)(32 / 64 bit)
Windows Server 2008 R2 (64 bit)
Windows HPC Server 2008 R2 (64 bit)
RedHat Enterprise Linux 5, 6 (64 bit)*
SUSE Linux Enterprise Server 10, 11 (64 bit)*
[Memory]
2GB or more
[Hard disk]
10GB or more
free capacity
recommended
About 1 million elements /
350MB
Max. number of elements:
1 billion
Max. number of parallel
processing: 768 (proven)
・Windows version
Intel Visual Fortran Composer XE 2013
・Linux version
GFortran (GNU Fortran compiler)
(Linux standard)
Windows XP Professional (32 / 64 bit)
Windows Vista (Business, Ultimate, Enterprise)(32 / 64 bit)
Windows 7 (Professional, Ultimate, Enterprise)(32 / 64 bit)
Windows Server 2008 R2 (64 bit)
Windows HPC Server 2008 R2 (64 bit)
RedHat Enterprise Linux 5, 6 (64 bit)*
SUSE Linux Enterprise Server 10, 11 (64 bit)*
[Memory]
2GB or more
[Hard disk]
10GB or more
free capacity
recommended
About 1 million elements /
400 MB
Max. number of elements:
1 billion
Max. number of parallel
processing:3072 (proven)
・Windows version
Microsoft Visual Studio 2012
(non-XP-compliant)
・Linux version
GCC (GNU Compiler Collection)
(Linux standard)
* Not supported in HEAT Designer.* Solver only. Not supported on Itanium-based 64-bit version.
Windows and Windows Vista are registered trademarks of Microsoft Corporation in the United States and other countries.
Microsoft Visual Studio is a registered trademark of Microsoft Corporation in the United States and other countries.
The offi cial name of Windows is the "Microsoft® Windows® Operating System".
Linux is a trademark registered to Linus Torvalds in the United States and other countries.
Intel is a registered trademark of Intel Corporation in the United States and other countries.
Red Hat is a registered trademark of Red Hat, Inc. in the United States and other countries.
SUSE is a registered trademark of SUSE LINUX AG, Novell Inc.
All other product and service names mentioned are registered trademarks or trademarks of their respective companies.
China
France
Korea TokyoUSAUSA
HiroshimaOsaka
ChinaTaiwan
2013.01©2013 Software Cradle
Location and affi liate companies
Cradle has technology partners and distributors in China, Korea, France, and the USA. We are fully
capable of supporting our global customer base. Cradle North America Inc. is the USA based affi liate
company founded in 2008. Applied Thermal Fluid Analysis Center Ltd. (ATAC) was established in
Taiwan. Cradle is committed to expanding and supporting business in the worldwide market.
Software Cradle Co., Ltd.
・HeadquartersMainichi Intecio 3-4-5 Umeda,
Kita-ku, Osaka 530-0001 Japan
Tel: +81-6-6343-5641
Fax: +81-6-6343-5580
・TokyoGate City Ohsaki 1-11-1 Osaki,
Shinagawa-ku, Tokyo 141-0032 Japan
Tel: +81-3-5435-5641
Fax: +81-3-5435-5645
・USA70 Birch Alley Suite 240
Beavercreek, OH 45440
Tel: +1-937-912-5798
Fax: +1-513-672-0523
Email: info@cradle-cfd.com
Web: www.cradle-cfd.com
・Affiliated companiesTaiwan: Applied Thermal Fluid Analysis Center, Ltd. (ATAC) www.atac.tw
・Business partnersJapan: Mitsubishi Heavy Industries Machinery Technology Corporation www.mhimt.co.jp
Korea: CEDIC Co., Ltd. www.cedic.biz
France: FLUOREM www.fl uorem.com
China: Shanghai HONGYUAN information technology Co., Ltd. www.hongyuantek.com
China: Nanjing Tianfu Software Co., Ltd. www.njtf.cn
USA: Wright State University www.wright.edu
Headquarters (Osaka)
Tokyo offi ce
Cradle North America Inc.
* All other product and service names mentioned are registered trademarks or trademarks of their respective companies.
* Contents and specifi cations of products are as of November 28, 2012 and subject to change without notice. We shall not be held liable for any
errors in fi gures and pictures, or any typographical errors in this brochure.
Contact:
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