July 21, 2023 at 11:18 am
C N
Ansys Employee

Hello Waruna,

I recommend you to reduce the aspect ratio to less than 100 which is a reasonable mesh parameter . Please calculate the Y value according to the reynolds number and assuming y plus value greater than 1 less than 5. So I recommend you to change the first cell height of your inflation layer. Then please change the under relaxtion factors increase their values in advance controls. Also switch on the option of neglet higher order tems for higher order term relaxation.I hope this help you in getting better convergence.

Thanks,

Chaitanya Natraj