how to judge the Optimization in FLUENT
 

HI, everyone.

here is the problem.
I have already have a mesh. But,
1.when set the boundary conditions, what is the type for ground, is that 'wall'?
2. how could I optimize the aspect ratio (H/W) of a street canyon in order to avoid gust wind for pedestrians in FLUENT. 3. And how could I judge it is the Optimization ?

I am looking forward to your reply. Thanks.

1. ground should be wall of course.
2 and 3. not sure about the answer. take a look at other article see what you can find.
when an aerodynamic study of an airfoil in performed they usually used 10 times the cord...

OK. Thank you very much for you reply.