Snapshot of an aerodynamic vehicle as an example of an external aerodynamic flow.
https://kbwiki-images.s3.amazonaws.com/f/f3/Comb.jpg
https://kbwiki-images.s3.amazonaws.com/b/b8/Cpe.jpg
https://kbwiki-images.s3.amazonaws.com/d/d9/Civil.jpg
https://kbwiki-images.s3.amazonaws.com/a/aa/Env.jpg
https://kbwiki-images.s3.amazonaws.com/3/38/Turb.jpg