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Problem Encountered inLid Driven Cavity in Finite Volume Method with SIMPLE Algorithm

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Old   July 3, 2015, 19:47
Default Problem Encountered inLid Driven Cavity in Finite Volume Method with SIMPLE Algorithm
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I have written my code in MATLAB and I need help from the forum on where things could be going wrong, my streamline plot appears not to be properly predicted and I am also not getting vortices on the corners of the cavity.

Please find code attached.

Please any help with code modification will be appreciated.

Thank you.
Attached Images
File Type: jpg Streamline-RE100.jpg (58.7 KB, 28 views)
Attached Files
File Type: txt Lid Driven Cavity Matlab Code.txt (26.2 KB, 44 views)

Last edited by Abdels83; July 4, 2015 at 10:44. Reason: I have updated the .m file and the code is now running. I also added the streamline plot for Reynolds number of 100.
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Old   July 4, 2015, 07:55
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Filippo Maria Denaro
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your M-file did not run, you have some errors to correct (Lx is not defined when used, normres is not defined, etc)
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Old   July 4, 2015, 10:46
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Quote:
Originally Posted by FMDenaro View Post
your M-file did not run, you have some errors to correct (Lx is not defined when used, normres is not defined, etc)
Thank you Filippo, I have corrected the error and the code is now running. I also attached the streamline plot for Reynolds number of 100.

Many Thanks.
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Old   July 4, 2015, 12:17
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if you are using primitive variables you must debug your solution (u,v,p).
The streamlines are just a post-processing that can be affected by some factors.
However, the figure you attached shows a quite regular pattern for Re=100.

Use a fine grid (for example 100x100) to ensure Re_h =1 and check the velocity profiles (Ghia&Ghia paper).
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finite volume method, lid- driven cavity, matlab, simple staggered grid

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