Validating HyperWorks CFD X 2019 by calculating Drag Coefficient of Ahmed Body

Hello all,

As I mentioned on the topic, I perform CFD analyzes on Ahmed Body,

In order to do that, I focused on 2 reference curves

In my excel file, you can understand my logic. The Excel file contains all the data which defines all details of the specific analyse except mesh type (Mesh type defines my element size-meshing method etc.)

I also added examples of my mesh structures below.

My main focus is to understand how should I use HyperWorks. When can I understand that, my analyzes give results close to real, how can I validate my results.

Thanks in advance

mesh type 10 (Surface mesh is 10 mm, Ref zone 1: 10 mm, Ref2: 25, Ref3: 50, Ref4: 100, Tunnel element size: 167 etc.)  Total of 4.5 million elements

mesh type 12 (Surface mesh is 5 mm, Ref zone 1: 5 mm, Ref2: 12.5, Ref3: 37, Ref4: 100, Tunnel element size: 167 etc.)   Total of 29 million elements