Boeing Defense, Space & Security PhantomWorks · Cost . Consistency : Staff training and tool maintenance . Expert support focused on a few tools : Tailor computing infrastructure

Boeing Defense, Space & Security PhantomWorks

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Challenges toward increased reliance on physics-based modeling in design

Ray Cosner Senior Technical

Fellow Director, Technology

Strategy Execution

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Copyright 2011 Boeing. All rights reserved.

BDS | PhantomWorks

Several factors are important in industrial acceptance of physics-based modeling tools

Accuracy Superior to other options? Time Faster end-to-end than other options? Cost Total cost cheaper than other options? Process integration, user support, facilities Consistency Variability equals risk

2

Usage PracticeQ

ualit

y

IDEAL

Acceptable

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BDS | PhantomWorks

Todays Situation

Routine

Steady-State Navier-Stokes in all programs Assess flowfields, conduct trade

studies, identify options Diverse applications

Design confirmation in wind tunnel

Emerging

Multi-disciplinary Aeroelastics

Simple modal analysis Coupled to NASTRAN

Aero-acoustic, Aero-optics

Automated Optimization

Unsteady flow Routine for rotary wing

applications Gaining traction for fixed-wing

aircraft (where appropriate) 3

Engineering, Operations & Technology | Boeing Research & Technology


AH-64 Apache Computed Surface Pressure Contours

Engineering, Operations & Technology | Boeing Research & Technology


Animation of Iso-Vorticity Surface

Streamlines in Mean Flow Solution

Unsteady Analyses of Hemispherical Turret for Aero-Optic Performance D=12, M=0.3, SST/LESb Turbulence Model

Locations of Hotwire Measurements

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Whats Holding Us Back?

Throughput and End-To-End Cycle Time Consistent quick turnaround essential in a schedule-driven development

program Engineering development culminates in large databases for loads,

stability and control, flight simulation

Consistency (quality control) One awshit cancels out a hundred successes CFD is a specialist tool to a significant degree User skill is often key factor in getting consistent high quality results CFD groups have lots of Ph.D.s

6

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Process performance set by the weakest link in the chain

7

Geometry Source (CAD or other)

Analysis Geometry

Computational Grid

Raw Computed Data

Engineering Data, Insights,

Knowledge

Geometry Acquisition

and Preparation

Computational Model Setup

Computational Analysis

Engineering Analysis

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Data Quality Management

Many ways to foul up an analysis Geometry setup, grid generation, modeling choices, solution

execution, data analysis and interpretation Essential to understand the expected flow physics, and the knowledge

that must be obtained from the data Rely on identifying / using best practices to set up analyses Validation studies After-action reviews Trial-and-error when faced with a new problem Rely on expert review to assess completed analyses Can we trust these results for critical decisions?

8

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BDS | PhantomWorks

Versatile tools pay off in many ways

Accuracy Time Cost Consistency

Staff training and tool maintenance

Expert support focused on a few tools

Tailor computing infrastructure

9

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BDS | PhantomWorks

Engineering Acceptance of Simulation Tools

Accuracy Meets the design process

need? Throughout the operational envelope?

Time Faster than other sources

of data? From the decision to

acquire data, to final delivery of data?

Cost Cheaper than other

sources? Person-hours, facilities,

licenses, power, .. Consistency (Risk) Will we get consistently

good results (accuracy, time, cost)?

10

Challenges toward increased reliance on physics-based modeling in designSeveral factors are important in industrial acceptance of physics-based modeling toolsTodays SituationSlide Number 4Slide Number 5Whats Holding Us Back?Process performance set by the weakest link in the chainData Quality ManagementVersatile tools pay off in many waysEngineering Acceptance of Simulation Tools

Documents

Boeing Defense, Space & Security PhantomWorks · Cost . Consistency : Staff training and tool maintenance . Expert support focused on a few tools : Tailor computing infrastructure