Geometry
 

Hi CFD- Online

I want to make a CFD analysis of a heat exchanger.
It's a quite complex geometry, so for the sake of drawing, it would be easiest to just draw the solid parts ie. wall of the shell and tubes respectively.

Is that enough?

Can the programs (OPENFOAM and ANSYS) make the fluid domain by itself?

Or do I need to draw all of it ?

Hoping some one can clear this.

BR