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[Rashmikant15]

[bigfooted]

Your solution converges when you switch MUSCL off? Then the solution is to switch MUSCL off. MUSCL does not converge very well, but you could play with CFL, limiters, etc. and try to make it converge.

Also, the mesh you are using is too coarse to capture all the flow physics, you need to refine it where gradients are large. So around the sphere and in the wake. You can also modify the geometry a bit, place the farfield closer to the cylinder and modify the wake region to capture the wake properly: