Grid independent test
 

Hi I am new to ansys doing some basic things to learn fluent

My problem is room air distribution. To learn Fluent I have taken one computational domain from a literature ( A room with single window flow).

A single window dimension is w=2 h=1.5 in front of the room. The single window divided into two parts bottom w=2 h=.75 and top part w=2 h=0.75.

The room is W=3m H=3m and Depth=15m. Before adding the complexity into domain i want to do the grid independent test.

How to proceed for that. which parameter i have to consider to do the grid convergence test and then what i have to do.