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Different moment coefficient for VAWT at different courant number.

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April 1, 2024, 18:27	Different moment coefficient for VAWT at different courant number.	#1
shivam_8399 New Member shivam singh tomar Join Date: Jul 2022 Posts: 2 Rep Power: 0	Hello everyone, I am trying to simulate VAWT in 2D on openfoam 8. I have made a very good mesh, however when running the simulation on courant number 1,my moment coefficient are going negative(i.e far from experimental data), however if i increase the courant number to 10 and make sure the solver is stable, my moment coefficients are positive and much more nearby to the experimental data. I am not able to get my head around the problem. Any help would be highly appreciated. If anyone wants to try the case setup please email me at (amz218310@am.iitd.ac.in), i will be happy to share the case file.

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courant number, openfoam, vawt wind turbine

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