A 3D model of a converging-diverging nozzle was created in .step format. The model is not copyrighted and permission for reuse is granted.
A full Youtube tutorial video about Converging-diverging nozzle can be found on my Youtube channel. A bit of theory around the derivation of equations used isentropic compressible flows has been discussed before carrying out a full CFD simulation using the geometry attached on this page. I used the density based solver in addition to the K Epsilon model to simulate the trajectory of the nozzle flow into the atmosphere. You can watch the full video by clicking on this link: Video
To download the tutorial file, please click on the following link: 2D Geometry
Converging-diverging (CD) Nozzle CFD simulation