how can i have a mesh structure like this picture?!
 

Hi everyone!

i want to have a mesh structure like pic 1. how can i handle it?

my case study is air flow simulation around a 3D simplified car body. i tried to preserve structured meshing until the body edges but i couldn't (see pic 2 and pic 3). also i tried to use cutcell method but when i use it, the structure is not integrated in whole geometry.

please help me!