Hi, I am using flow simulation 2012 and I am running tests on bluff body diffusers however i am not getting enough downforce as compared to other studies, The drag force is double what the downforce is.
I have a real wall moving at the same speed as the airflow to act as a moving floor,
I attached images of the pressure and velocity profiles, on the left are my results and on the right from someone elses study in different software. As you can see i dont get increased speed under the body and therefore no pressure difference.
Is it something to do with the meshing? or anything else i am missing?
Edit: my global goals are Force x and force y.
x is in direction of the flow.
reading from 40 m/s were -36N for force y and 75N for force x