Mesh Independence Study
 

Hi,
I am doing a transient simulation. I want to do a mesh independence study before moving to my actual case.
1. Should i do independence study in steady state or transient state?
2. Since i am going to work in transient state, will steady state independence study do?

yes it will be enough to do it in steady state, if you can achieve convergence.

By the way, what is the purpose of grid Independence study?


It is to ensure that as grid size approaches zero, the errors also get smaller and smaller (discretization error, round off errors may increase). If it is true for one time step or steady state condition, it is likely to be true for other time steps too.