Can a non streamlined body have lower Cd value?
I am trying to calculate the coefficient of drag from a simple geometry that can be seen as an projectile.
As I understood the more elongated a body is the better (so that there is no wake).
I simulated two different projectiles one as you can see in the mesh and one where the rear pyramidical end is cut off.
Apart from that I used the same settings. Including fmg-initialization from the video on flow over a airplane wing.
The second last is the full body, the last one is the cut projectile. As you can see in the editor the coefficient of drag is higher (worse) in the complete body and lower better where the end of the projectile is cut off.
Is the solution bad?
Or is there an effect at play that I don’t understand?