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 PRAVEEN CHANDRASHEKAR June 18, 1999 11:29

STANDARD TEST CASES FOR CFD-CODE VALIDATION

I am looking for experimental or numerical benchmarks for cfd code validation, like flow over NACA-0012. Some of the standard results are from AGARD and GAMM. Can anybody tell me where I can get these data?

 Hongjun Li June 18, 1999 12:16

Re: STANDARD TEST CASES FOR CFD-CODE VALIDATION

There are several ways to test CFD codes. first you may test the code's structure (numerical model):

Using circular cylinder (2-D) or sphare (3-D) to run low-speed inviscid flow. Then look at the contour plots. Does the code give you symmetric flow parten in the upper and lower sides? More importantly, the up-stream and the down-stream? (Believe me, not all code can pass this test.) From there you can determine if your numerical structures (boundary conditions, bugs, numerical dissipation treatments, etc.) are Okay or not. If the code does not give reasonable symmetric flow in upstream/downstream, it is possibly because of an bad wall boundary condition, or too much numerical dissipation. If you don't get symmetric flow in upper/lower sides. there may be problems in you far-field boundary conditions. Then you can test the math model: Using any smooth shaped body with a sharp trailing edge. Run inviscid flow and look at the total pressure distribution. You know what you should get from the code. The last step is to test the physical model (viscous effects, ability to catch separation. if compressible code, ability to catch sharp shock waves, etc.) You may find some test data to compare with.

HJ

 Hongjun Li June 18, 1999 13:38

Re: STANDARD TEST CASES FOR CFD-CODE VALIDATION

For test cases, you may try to get "Test cases for inviscid flow field method" by Yoshihara and Sacher, AGARD-AR-211. (1985).

 Hongjun Li June 18, 1999 13:42

Re: STANDARD TEST CASES FOR CFD-CODE VALIDATION

For test cases, you may try to get "Test cases for inviscid flow field method" by Yoshihara and Sacher, AGARD-AR-211. (1985). and "Airfoil RAE-2822-pressure distributions and boundary layer and wake measurements" by Cook, McDonald, and Firmin, AGARD-AR-138, (1979).

 xinboy November 9, 2009 01:54

Hi，Li！
Could you send me the reference “Test cases for inviscid flow field method” AGARD-AR-211?
I can't achieve this paper from NATO.
Thank you!
email: cuishuxin1234@yahoo.com.cn

 CFDtoy November 9, 2009 10:31

dataBase for CFD code validation

Hello Praveen,
Check this out

http://ercoftac.mech.surrey.ac.uk/

/CFDtoy

Quote:
 Originally Posted by PRAVEEN CHANDRASHEKAR ;3542 I am looking for experimental or numerical benchmarks for cfd code validation, like flow over NACA-0012. Some of the standard results are from AGARD and GAMM. Can anybody tell me where I can get these data?

 xinboy November 9, 2009 11:21

Quote:
 Originally Posted by CFDtoy (Post 235593) Hello Praveen, Check this out http://ercoftac.mech.surrey.ac.uk/ /CFDtoy
I have browsed the web you gived. It is very perfect.
Do you have the paper "Test Cases for Inviscid Flow Field Methods" I mentioned before ?

 pankos February 8, 2011 12:25

Can you give me this paper:
AGARD AR-211, “Test Cases for Inviscid Flowfield Methods,” May 1985

I cant find at internet. Thanks..

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