Hello and Thank you for your response.
I want to use DDPM with RSM and I understand that it is very hard to converge in this model and RSM is very sensitive to mesh skewness. this is my meshing and the worst part is the connection between the inlet and the body. how can I improve this mesh? I used the sweep and multizone for meshing. 
An AI-based virtual assistant for active Ansys Academic Customers. Please login using your university issued email address.
Hey there, you are quite inquisitive! You have hit your hourly question limit. Please retry after '10' minutes. For questions, please reach out to ansyslearn@ansys.com.
RETRY
You are navigating away from the AIS Discovery experience