Ansys Record III

ANNA UNIVERSITY:: CHENNAIPRACTICAL EXAMINATION-APRIL-2013

Dr.NAGARATHINAM’S COLLEGE OF ENGINEERING

RASIPURAM-637505

DEPARTMENT OF MECHANICAL ENGINEERING

SIMULATION AND ANALYSIS LABORATORY

NAME : …………………………………………………………….

REG NO : ……………………………………………………………

YEAR/SEM : ……………………………………………………………

Dr.NAGARATHINAM’S COLLEGE OF ENGINEERINGVennandur, Namakkal-637505

Certified that this is a Bonafide Record

of Work done by the above Student of the

…………………………………………………………………. Laboratory during

the academic year 2012-2013.

Signature of lab in charge ` Signature of Head of the Department

Submitted for Practical Examination

Held on ………………………

Internal Examiner External Examiner

S.NO DATE NAME OF THE EXPRIMENT P.NO MARKS SIGN

S.NO DATE NAME OF THE EXPRIMENT P.NO MARKS SIGN

INTRODUCTION to FEA and ANSYS

What is FEA?

Finite Element analysis is a way to simulate loading conditions on a design and determine the designs response to those conditions.

The design is modeled using discrete building blocks called elements. Each element has exact equations that describe how it responds to a certain load. The “Sum” of the response of all elements in the model gives the total response of the

design. The elements have a finite number of unknowns, hence the name finite elements. The finite element model, which has a finite number of unknowns, can only

approximate the response of the physical system which has infinite unknowns.

How good is the approximation?

Unfortunately, there is no easy answer to this question, it depends entirely on what you are simulating and the tools you use for the simulation.

Why is FEA needed?

To reduce the amount of prototype testing. Computer Simulation allows multiple “what if“scenarios to be tested quickly and

effectively. To simulate designs those are not suitable for prototype testing. E.g. Surgical Implants

such as an artificial knee.

About ANSYS:

ANSYS is a complete FEA software package used by engineers worldwide in virtually all fields of engineering. ANSYS is a virtual Prototyping technique used to iterate various scenarios to optimize the product.

General Procedure of Finite Element Analysis:

1. Creation of geometry or continuum using preprocessor.2. Discretization of geometry or continuum using preprocessor.3. Checking for convergence of elements and nodes using preprocessor.4. Applying loads and boundary conditions using preprocessor.5. Solving or analyzing using solver6. Viewing of Results using postprocessor.

Build Geometry:

Construct a two (or) three dimensional representation of the object to be modeled and tested using the work plane co-ordinate system in Ansys.

Define Material Properties:

Define the necessary material from the library that composes the object model which includes thermal and mechanical properties.

Generate Mesh:

Now define how the model system should be broken down into finite pieces.

Apply Loads:

The last task in preprocessing is to restrict the system by constraining the displacement and physical loading.

Obtain Solution:

The solution is obtained using solver available in ANSYS. The computer can understand easily if the problem is solved in matrices.

Present the Result:

After the solution has been obtained there are many ways to present Ansys result either in graph or in plot.

Specific Capabilities of ANSYS Structural Analysis:

Structural analysis is probably the most the common application of the finite element method such as piston, machine parts and tools.

Static Analysis:

It is the used to determine displacement, stress etc. under static loading conditions. Ansys can compute linear and non-linear types (e.g. the large strain hyper elasticity and creep problems).

Transient Dynamic Analysis:

It is used to determine the response of a structure to time varying loads.

Buckling Analysis:

It is used to calculate buckling load and to determine the shape of the component after applying the buckling load. Both linear buckling and non – linear buckling analysis are possible.

Thermal Analysis:

The steady state analysis of any solid under thermal boundary conditions calculates the effect of steady thermal load on a system (or) component that includes the following.a) Convection.b) Radiation.c) Heat flow rates.d) Heat fluxes.e) Heat generation rates.f) Constant temperature boundaries.

Fluid Flow: The ANSYS CFD offers comprehensive tools for analysis of two-dimensional and three

dimensional fluid flow fields.

Magnetic: Magnetic analysis is done using Ansys / Electromagnetic program. It can calculate the

magnetic field in device such as power generators, electric motor etc. Interest in magnetic analysis is finding magnetic flux, magnetic density, power loss and magnetic forces.

Acoustic / Vibrations:

Ansys is the capable of modeling and analyzing vibration system. Acoustic is the study of the generation, absorption and reflection of pressure waves in a fluid application.

Few examples of acoustic applications are a) Design of concert house, where an even distribution of sound pressure is

possible.b) Noise cancellation in automobile. c) Underground water acoustics.d) Noise minimization in machine shop.e) Geophysical exploration.

Coupled Fields:

A coupled field analysis is an analysis that takes into account the interation between two (or) more fields of engineering analysis. Pressure vessels, Induction heating and Micro electro mechanical systems are few examples.

Result: Thus the basics of FEA and ANSYS are studied.EX.NO:1 STRESS ANALYSIS OF RECTANGULAR L – BRACKETDATE:

Aim To perform stress analysis of rectangular L- bracket and to determine the maximum stress and

maximum deflection.

Procedure1. Utility Menu > Change Job Name > Enter Job Name. Utility Menu > File > Change Title > Enter New Title.

2. Preference > Structural > OK.

3. Preprocessor > Element Type > Add/Edit/Delete > Solid Quad 8Node 82 > Select > Options > Plane Stress/Thickness.

4. Preprocessor > Material Properties > Material Model > Structural > Linear > Elastic > Isotropic > EX = 2E5, PRXY = 0.3.

5. Preprocessor > Real Constant > Add/Edit/Delete > plane 82> thickness = 12.

6. Preprocessor > modeling > create > Area > rectangle > centre & corner

WP X = 75WP Y = 0Width = 150Height = 50Apply

WP X = 125WP Y = -75Width = 50Height = 100Ok

7. Preprocessor > modeling > create > Areas > circle > solid circle >

WP X = 0WP Y = 0Radius = 25Apply

WP X = 125WP Y = -125, Radius = 25 > Ok

8. Preprocessor > modeling > operate > Booleans > Add > Areas > pick all9. Preprocessor > modeling > create > line > line fillet > select 2 lines > fillet radius = 10 > Ok.

10. Preprocessor > modeling > create > Areas > Arbitrary > By lines > select the three lines.

11. Preprocessor > modeling > create > Area > circle > solid circle > WP X = 0WP Y = 0Radius = 10Apply

WP X = 125WP Y = -125 Radius = 10 Ok.

12. Preprocessor > modeling > operate > Booleans > Subtract > Areas > Select the rectangle > Apply > select two circles > Ok.

13. Preprocessor > meshing > mesh tool > size control > Areas > Element edge length = 2 mm > Ok > mesh > Areas > free> pick all.

14. Solution > define loads > apply > Structural > displacement > online > select the left hole (Inside) > apply > All DOF > Displacement value = 0 > ok.

15. Solution > pressure > on line > pick all (Select bottom left of the circle> apply.Load value = 50; optional value = 25 > apply

16. Solution > pressure > on line > pick all (Select bottom right of the circle> apply.Load value = 25; optional value = 50 > apply

17. Solution > solve current LS > ok

18. General post processor > plot result > Deformed shaped > Deformed + Undeformed > Ok.

18. General post processor > plot result > contour plot > nodal solution > stress > von mises > Ok.

19. List result > reaction solution > Ok

Result:Thus the stress analysis of rectangular L-bracket with circular hole is performed.

Ex. No:2 STRESS ANALYSIS ON CANTILEVER BEAM SUBJECTED TO POINT LOAD

DATE:

Aim:To obtain stress analysis of cantilever beam subjected to point load and to determine max. stress

and max. deflection.

Procedure:

1. Utility Menu > Change Job Name > Enter Job Name. Utility Menu > File > Change Title > Enter New Title.


3. Preprocessor > Element type > Add/Edit/ delete > beam > 2D elastic 3 > close.

4. Preprocessor > Real Constant > Add/Edit/Delete > Area = 100, Izz = 833.33 & Height = 10 > Ok


6. Preprocessor > Modeling > create > nodes > Inactive CSNode 1X=0Y=0

Node 2X= 20Y=0

Node 3X= 40Y=0

Node 4X= 60Y=0

Node 5X= 80Y=0

Node 6X= 100Y=0

7. List > nodes > coordinate only > ok

8. Preprocessor > modeling > create > elements > Auto numbered thru’ nodes > select Node 1 & 2Node 2 & 3Node 3 & 4Node 4 & 5Node 5 & 6 > ok.

9. Solution > define loads > apply > structural > displacement > on nodes > select node 1 > apply >

all DOF > displacement = 0 > ok.

10. Solution > Force/moment > on nodes > node 6 > apply > FY > -100 > ok.

11. Solution > solve > current L.S > ok.

12. General post processor > plot result > deform shape > Deformed + Undeformed > ok.

13. General post processor > element table > define table > add > user table for item

I > by sequence num > NMISC 1 > apply

J > by sequence num > NMISC 3 > apply


J > by sequence num > NMISC 4 > Ok.

14. Plot result > line element result > I > J > first result > deformed shape & undeformed shape > ok15. General postprocessor > list result > nodal solution > DOF solution > UY > displacement result

( Table 1)

16. General postprocessor > contour plot > line element res. > Ok.

Table 1: Displacement – Deflection

Nodes UY1 02 -1.0667 e-013 -0.39619 e-014 -0.82286 e-015 -0.13410

6 -0.19048

Result:Thus the stress analysis on cantilever beam subjected point load is performed.

Ex. No: 3 STRESS ANALYSIS OF SIMPLY SUPPORTED BEAM.

DATE:

Aim:To perform Stress analysis of simply supported beam.

Procedure:

1. Utility Menu > Change Job Name > Enter Job Name. Utility Menu > File > Change Title > Enter New Title.


3. Preprocessor > Element type > Add/Edit/ delete > beam > 2D elastic 3> close.

4. Preprocessor > Real Constant > Add/Edit/Delete > Area = 100, Izz = 833.33 & Height = 10 > Ok


6. Preprocessor > Modeling > create > nodes > Inactive CSNode 1X=0Y=0

Node 2X= 25Y=0

Node 3X= 50Y=0

Node 4X= 75Y=0

Node 5X= 100Y=0

17. List > nodes > coordinate only > ok

18. Preprocessor > modeling > create > elements > Auto numbered thru’ nodes > select Node 1 & 2Node 2 & 3Node 3 & 4Node 4 & 5Node 5 & 6 > ok.

19. Solution > define loads > apply > structural > displacement > on nodes > select node 1 & node 5

> apply > UY > displacement = 0 > ok.

20. Solution > Force/moment > on nodes > node 3 > apply > FY > -100 > ok.

21. Solution > solve > current L.S > ok.

22. General post processor > plot result > deform shape > Deformed + Undeformed > ok.

23. General post processor > element table > define table > add > user table for item

I > by sequence num > NMISC 1 > Apply

J > by sequence num > NMISC 3 > Apply


J > by sequence num > NMISC 4 > Ok.

24. Plot result > line element result > Smax I > Smax J > first result > deformed shape & undeformed shape > ok

25. General postprocessor > list result > nodal solution > DOF solution > UY > displacement result ( Table 1)

26. General postprocessor > contour plot > line element res. > Ok.

Table 1: Displacement – Deflection

Nodes UY1 02 -0.81846 e-23 -0.11905 e-14 -0.81846 e-2

Result:Thus the stress analysis of simply supported beam is obtained.

Ex. No: 4 MODE FREQUENCY ANALYSIS OF CANTILEVER BEAM

DATE:

Aim:

To obtain the mode frequency analysis on Cantilever beam and to determine its natural frequency.

Procedure:1. Utility Menu > Change Job Name > Enter Job Name. Utility Menu > File > Change Title > Enter New Title.


3. Preprocessor > Element type > Add/Edit/ delete > beam > 2D elastic 3> close.

4. Preprocessor > Real Constant > Add/Edit/Delete > Area = 100, Izz = 833.33 & Height = 10 > Ok.

5. Preprocessor > Material Properties > Material Model > Structural > Linear > Elastic > Isotropic > EX = 2.068 E5, PRXY = 0.3 & Density = 7.83E-6.

6. Preprocessor > Modeling > create > key points > inactive CS Key point no.1 = (0, 0) Key point no.2 = (1000, 0)

7. Preprocessor > Modeling > create > lines > straight lines > select 1&2.

8. Meshing > mesh tool > lines > Element edge length > = 100 mm > mesh > pick all

9. Solution > analysis type > new analysis > modal > ok > analysis options > subspace = 5 > ok.

10. Solution > define loads > apply > structural > displacement > on key points > select first point > apply > all DOF > displacement = 0 > Ok.

11. Solve > current L.S > close

12. General postprocessor > result summary.

13. General postprocessor > read result > first set > Ok.

14. General postprocessor > plot result > deform shape > deformed + undeformed > Ok.

15. General postprocessor > plot control > animate > modal shape.

Table :

S.No. Time/FrequencyLoad Shape

Sub step

Cumulation

1 8.3 1 1 12 52.011 1 2 23 145.64 1 3 34 285.51 1 4 45 427.54 1 5 5

Result:Thus the mode frequency analysis of Cantilever beam is obtained.

Ex. No: 5 MODE FREQUENCY ANALYSIS OF SIMPLY SUPPORTED BEAM

DATE:

Aim:To perform the model frequency analysis on simply supported beam.

Procedure:1. Utility Menu > Change Job Name > Enter Job Name. Utility Menu > File > Change Title > Enter New Title.


3. Preprocessor > Element type > Add/Edit/ delete > beam > 2D elastic 3 > close.

4. Preprocessor > Real Constant > Add/Edit/Delete > Area = 100, Izz = 833.33 & Height = 10 > Ok.

5. Preprocessor > Material Properties > Material Model > Structural > Linear > Elastic > Isotropic > EX = 2.068 E5, PRXY = 0.3 & Density = 7.83E-6.

6. Preprocessor > Modeling > create > key points > inactive CS Key point no.1 = (0, 0) Key point no.2 = (1000, 0)

7. Preprocessor > Modeling > create > lines > straight lines > select 1&2.

8. Meshing > mesh tool > lines > Element edge length > = 100 mm > mesh > pick all

9. Solution > analysis type > new analysis > modal > ok > analysis options > subspace = 5 > ok.

10. Solution > define loads > apply > structural > displacement > on key points > select first point & second point > apply > UY > displacement = 0 > Ok.

11. Solve > current L.S > close

12. General postprocessor > result summary.

13. General postprocessor > read result > first set > Ok.

14. General postprocessor > plot result > deform shape > deformed + undeformed > Ok.

15. General postprocessor > plot control > animate > modal shape.

Table :

Result:

S.No. Time/FrequencyLoad Shape

Sub step

Cumulation

1 0 1 1 12 23.298 1 2 23 93.191 1 3 34 209.73 1 4 45 373.16 1 5 5

Thus the mode frequency analysis of simply supported beam is obtained.

Ex. No: 6 H ARM O N I C AN A L Y S I S OF A 2 D C O MP O N E N T

DATE :

A IM

To conduct the harmonic analysis of a 2D component by using ANSYS software.

P RO CEDURE

1. Preprocessor - Element type - Add/Edit/Delete – Add – Beam, 2D elastic 3 – Ok – Close.

2. Real constants - Add/Edit/Delete – Add – Ok – Area 0.1e-3, Izz 0.833e-9, Height 0.01 – Ok – Close.

3. Material props - Material Models –Structural – Linear – Elastic - Isotropic – EX 206e9, PRXY

0.25 – Ok – Density – DENS 7830 – Ok.

4. Modeling – Create – Key points – Inactive CS – Enter the coordinate values - Ok. Lines – lines

– Straight Line – Join the two key points – Ok.

5. Meshing – Size Cntrls – manual size – lines – all lines – Enter the value of no of element

divisions 25 – Ok. Mesh – Lines – Select the line – Ok.

6. Solution - Analysis type – New analysis – Harmonic – Ok. Analysis type – Analysis options –

Full, Real+ imaginary – Ok– Use the default settings – Ok

7. Solution – Define Loads – Apply – Structural – Displacement - On nodes – Select the node point

–Ok – All DOF – Ok. Force/Moment – On Nodes – select the node 2 – Ok – Direction of force/mom

FY, Real part of force/mom -100 – Ok. Load step Opts – Time/Frequency – Freq and Substps – Enter

the values of Harmonic freq range 1-100, Number of sub steps 100, Stepped – Ok.

8. Solve – Current LS – Ok – Solution is done – Close.

9. TimeHist postpro – Variable Viewer – Click “Add” icon – Nodal Solution – DOF Solution – Y-

Component of displacement – Ok – Enter 2 – Ok. Click “List data” icon and view the amplitude list.

Click “Graph” icon and view the graph. To get a better view of the response, view the log scale of

UY. Plotctrls – Style – Graphs – Modify axes – Select Y axis scale as Logarithmic – Ok. Plot – Replot

– Now we can see the better view.

10. File – Report Generator – Choose Append – OK – Image Capture – Ok - Close. (Capture all images)

RESULT

Thus the harmonic analysis of a 2D component is done by using the ANSYS Software.

Ex. No:7 THERMAL STRESS ANALYSIS OF A 2D COMPONENT

DATE :

AIM

To conduct the thermal stress analysis of a 2D component by using ANSYS software.

PROCEDURE 1. Preference – thermal and structrual - h-Method - Ok.

2. Preprocessor - Element type - Add/Edit/Delete – Add – Solid, Quad 4 node 42 – Ok – Options – plane strs w/thk – Ok – Close.

3. Real constants - Add/Edit/Delete – Add – Ok – THK 100 – Ok – Close.

4. Material props - Material Models –Structural – Linear – Elastic - Isotropic – EX 2e5, PRXY 0.3 – Ok – Thermal expansion – Secant coefficient – Isotropic – ALPX 12e-6 – Ok.

5. Modeling – Create – Areas - Rectangle – by 2 corners – Enter the coordinate values, height, width - Ok.

6. Meshing – Mesh tool – Areas, set – select the object – Ok – Element edge length 10 - Ok – Mesh tool- Tri, free - mesh – Select the object –Ok.

7. Solution – Define Loads – Apply – Structural – Displacement - On lines – Select left boundary of the object – Ok – Temperature – Uniform Temp –select all boundaries - Enter the temp. Value 50 – Ok.

8. Solve – Current LS – Ok – Solution is done – Close.

9. General post proc – Plot results – Contour plot – Nodal solution – Stress – 1st principal stress – Ok – Nodal solution – DOF Solution – Displacement vector sum - Ok.

10. File – Report Generator – Choose Append – OK – Image Capture – Ok - Close.

RE S UL T

Thus the thermal stress analysis of a 2D component is done by using the ANSYS Software.

Ex.No: 8 STRESS ANALYSIS OF A PLATE WITH A CIRCULAR HOLE

DATE :

AimTo perform stress analysis of a plate with a circular hole.

Procedure1. Utility Menu > Change Job Name > Enter Job Name. Utility Menu > File > Change Title > Enter New Title.


3. Preprocessor > Element Type > Add/Edit/Delete > Solid Quad 4Node 42 > Select > Options > Plane Stress/Thickness.


5. Preprocessor > Real Constant > Add/Edit/Delete > plane 42> thickness = 10

6. Preprocessor > Modeling > Create > Areas > Rectangular by Dimension > X1, X2 = 0, 50 Y1, Y2 = 0, 50.

7. Preprocessor > Modeling > Create > Areas > Circle > Solid circle > WP X = 0, WP Y = 50 & Radius = 10 > OK.

8. Preprocessor > Modeling > Create > Subtract > Areas > Select rectangle >Apply > Select Circle > Ok.

9. Preprocessor > Meshing > Element Edge Length = 2 > Mesh > Areas > Free.

10. Solution > Analysis Type > New Analysis > Static > OK.

11. Solution > Define Load > Apply > Structural > Displacement > On lines > Select Bottom Line > UY > Displacement value = 0 > OK.

10. Solution > Define Load > On Lines > Select left line > Ok > UX > Displacement value = 0 > OK. 11. Solution > Pressure > On Line > Select Right line > Ok > Value [100] > Ok.

12. Solution > Solve > Current LS > Ok.

13. Utility menu > Plot control > Style > Symmetry Expansion > Periodic > Reflect about XY.

14. Plot control > Animate > deformed shape > Ok.

13. General Postprocessor > Plot Result > Deformed shape > Ok.

14. Plot Result > Plot Result > Contour Plot > Nodal Solution > Stress > Von Mises > Ok.

Result:Thus the stress analysis of a plate with a circular hole is performed.

Ex. No:9 CONDUCTIVE HEAT TRANSFER ANALYSIS OF 2D COMPONENT

DATE :

Aim:To perform the thermal analysis on a given block with convective heat transfer coefficient (h) of

10 W/m° C and the thermal conductivity (k) of the material is 10 W/m° C.

Procedure:

1. Preference > thermal > Ok.

2. Preprocessor > Element type > Add/edit /delete > Select thermal mass solid, Quad 4 node 55 (Plane 55) > close.

3. Preprocessor > material properties > Material Models > Thermal conductivity > Isotropic > KXX = 10 (thermal Conductivity )

4. Preprocessor > modeling > create > Areas > Rectangle > By 2 Corners > X = 0, Y = 0, width = 1, Height = 1 > Ok.

5. Preprocessor > Meshing > Mesh tool > Size Controls > Manual Size > element edge length = 0.05 > mesh > Areas > Free > Pick All

6. Solution > Analysis type > New analysis > steady state > Ok.

7. Solution > Define loads > Apply > Thermal > Temperature > on lines > click the top of the rectangular box > temperature > 500 > apply > click the left side of the rectangular box > ok > temperature > 100 > Ok.

8. Solution > Define loads > Apply > Thermal > convection > on lines > click the right side of the rectangular box > Ok.

9. Solve > current L.S > Ok.

10. General Preprocessor > Plot results > Contour Plot > Nodal Solution > DOF solution > nodal temperature (TEMP) > Ok.

Result:

Thus convective heat transfer analysis is performed.

Ex. No: 10 CONVECTIVE HEAT TRANSFER ANALYSIS OF A 2D COMPONENT

DATE :

AIM

To conduct the convective heat transfer analysis of a 2D component using ANSYS software.

PROCEDURE

1. Preference – Thermal - h-Method - Ok.

2. Preprocessor - Element type - Add/Edit/Delete – Add – Solid, Quad 4 node 55 – Ok – Close.

3. Real constants - Add/Edit/Delete – Add – Ok.

4. Material props - Material Models –Thermal – Conductivity – Isotropic – KXX 16 – Ok.

5. Preprocessor > modeling > create > Areas > Rectangle > By 2 Corners > X = 0, Y = 0, width = 1,

Height = 1 > Ok.

6. Meshing – Mesh tool – Areas, set – select the object – Ok – Element edge length 0.05 - Ok – Mesh tool- Tri, free mesh – Select the object –Ok.

7. Solution – Define Loads – Apply – Thermal – Temperature - On lines – Select the lines –Ok – Temp. Value 300 – Ok – Convection – On lines – select the appropriate line – Ok – Enter the values of film coefficient 50, bulk temperature 40 – Ok.

8. Solve – Current LS – Ok – solution is done – Close.

9. General post proc – List results – Nodal Solution – DOF Solution – Nodal temperature – Ok

10. Plot results – Contour plot – Nodal solution – DOF solution – Nodal Temperature – Ok.

11. File – Report Generator – Choose Append – OK – Image Capture – Ok - Close.

RESULT

Thus the convective heat transfer analysis of a 2D component is done by using the ANSYS Software.

EX NO: 11 SIMULATION OF CAM & FOLOWER MECHANISM

DATE:

AIM:

To simulation of cam & follower mechanism.

FORMULA:

For simple harmonic motion displacement of follower

,

Lift of the Follower

= Full Rotation

= Cam Rotation

:

Title ('simulation of cam & follower')

phi=0:1:60;

theta=360;

h=0.4;

s=(h./2)*((1-(cos((pi*theta)./phi))));

plot(phi,s);

xlabel ('cam angle (degree)');

ylabel ('follower disp (meter)');

grid;

Result:

Thus the MAT Lab Program has been simulated and output is verified.

EX NO: 12

DATE:

SIMULATION OF AIR CONDITIONING WITH CONDENSER

AND EVAPORATOR, TEMPERATURE AS INPUT TO ESTIMATE COP [VARIATION OF

EVAP, TEMP]

AIM:

Simulation of air conditioning with condenser and evaporator, temperature as input of estimate

COP

FORMULA:

Co-efficient of performance is given by

COP = [1/ (Te/Tc)-1]

Where,

Te = evaporator temperature

Tc = condenser temperature

MAT LAB PRAGRAM:

title ('simulation of coefficient of performance variation of condenser and evaporator temperature')

te=2:0.1:5;

tc=40;

x=(te./tc);

y=x-1;

c=1./y;

plot(te,c);

xlabel ('evap temp (degree)');

ylabel ('COP');

grid;

RESULT:

Thus the MAT LAB PROGRAM has been simulated and output is verified.

EX NO: 13

DATE:

SIMULASTION OF AIR CONDITIONING WITH CONDENSER

EVAPATORTEMPERATURE AS INPUT TO ESTIMATE COP [VARIATION OF COND TEMP]

AIM:

To simulate of air conditioning with condenser and evaporator temperature as input to estimate

COP [variation of condenser temp]

FORMULA USED:

Co-efficient of performance is given by

COP = [1/ (Te/Tc)-1]

Where,

Te = evaporator temp

Tc = condenser temp

Mat lab program:

Title ('simulation of coefficient of performance variation of condenser and evaporator temperature')

tc=35:1:45;

te=5;

x =te./tc;

y=(x-1);

c=(1./(y));

plot(tc,c);

xlabel ('cond temp');

ylabel ('COP');

grid;

RESULT:


EX NO: 14 SIMULATION OF HEAT EXCHANGER PROCESS

DATE:

AIM:

To simulation of heat exchanger processor.

FORMULA:

Heat transfer rate is given, Q = UA

MAT LAB PROGRAM:

title ('Simulation of heat exchanger')

s=1:0.5:5;

q=200000000;

u=4478;

n=30000;

d=0.024;

t= q./(u*2*pi*n*d*s);

plot(s,t);

xlabel ('length of tube (m)');

ylabel ('lmtd');

grid;

RESULT:


EX NO: 15 Simulation of spring mass system by varying mass

DATE:

AIM:

To simulation of spring mass system by varying mass.

FORMULA USED:

Natural frequency given by,

Fn = [(1/2π) x ]

Where,

Fn = Natural Frequency,

m = mass

MAT LAB PROGRAM:

title ('simulation of spring mass system by varing mass')

m=0:1:500;

K=5000;

f=(sqrt(K./m))./(2*pi);

plot(m,f);

xlabel ('mass (kg)');

ylabel ('frequency (HZ)');

grid;

RESULT:


EX NO: 16 SIMULATION OF SPRING MASS SYSTEM BY VARING STIFFNESS

DATE:

AIM:

To simulation of spring mass system by varying stiffness.

FORMULA:

Natural frequency is given by,

Fn = [1/ (2π) x ]

MAT LAB PROGRAM:

title ('simulation of spring mass system by varing Stiffness')

K=0:1:500;

m=5000;

f=(sqrt(K./m))./(2*pi);

plot(K,f);

xlabel ('Stiffness (N/m)');

ylabel ('frequency (Hz)');

grid;

RESULT:


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Ansys Record III