As title, and again, I am asking the number of grid points along one-direction, using finite volume method, low-Reynolds-number turbulence models, for pressure drag and heat transfer.

I am not sure if I've provided enough infomation for my question or not. If more input needed, please light me up.

Thanks,

Jiaying

This is more difficult to answer. Seems there is not a Yplus-like parameter here. Why don't you try a grid independence study after you get a solution?

Regards,

Guoping

Also depends on the overall accuracy of the code used.