mesh generation for sloping objects
 

Dear friends, I'm asking all of you to help me in this problem

I'm going to represent the wind tunnel in airpak. When meshing the objects, I have to choose the Hexa unstructured or Hexa Cartesian because of a number of objects in the simulation. Then there is worst quality mesh around the sloping objects, which lead to the inaccurate results. Could you tell me how to deal with the sloping objects?

The attached file is Schematic pictures of model, so could any body helping me because this is too much urgent for me in my study, thank you very much my friend and looking for your help.