
Requesting help in simulating an ejector with refrigerant(R125) as the fluid using ANSYS Fluent
The errors that occur are: divergence, floating point exception, invalid cp, reversed flow, etc. but these are the most common
The solutions I have tried now are
In the Setup
- Changed discretization
- Changed from real-gas-NIST to polynomial
- Changed courant number and relaxation factor
In the mesh
- Changed element size from very fine to coarse
- Tried refining the throat area, tried other refinement methods
In the geometry
- Tried various different physical parameters that are allowed for the ejector study.
In the picture, only half of it is done as it is a 2D-axisymmetric instead
I also attached the allowed parameters
Please send help, I have been stuck on these for weeks now. I still cant get those shockwaves to form. Thank you!