Hello Abdul,

I am using a rectangular domain. I have attached a figure to explain the size.

Hello Abdul,

I am using a rectangular domain. I have attached a figure to explain the size. 

If the dimension of square is D then domain size is 18D in the wake region and 7D on the left of bluff body. The lateral boundaries are at a distance of 7.5D. 

Thank you for your answer.

Regarding the model:-

1) the upper and lower boundaries are not walls as i am trying to simulate wind flow around a 2D section in atmospheric BL

2) The solver used in ADINA is a flow condition based solver so I reduced tolerance factors to 1e-5

Dear Divye Malik

you can put the following steps:

1- the turbulent intensity at the entrance about 0.05 and make a long entrance region, you can read the following papers;

2- make a long entrance region and  you can read the following papers;

3- make the upper and lower boundaries as symmetry.you can read the following papers;

you can read the following papers;