Hi,

I am simulating the flow over a square cylinder contained in a circular domain. I will be assigning the front half of the cylinder as inlet and the rear half portion as the outlet.

For this reason. I had to split the circular domain at the top and bottom such that there is a face at the front and another face at the rear on the circumferential surface of the circular domain.

I created an O grid inside an O grid. I had to split the top and bottom blocks of the outer O grid into 2 halves so that there are elements at the junction of inlet and outlet. Now, do I modify the top and bottom extreme edges of the inner O grid such that I make them curved to match with extreme side edges of the same O grid as shown in the image?

The side edges automatically became circular on applying the pre-mesh parameters.Thanks