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it is always diverging in some way like
“The solution diverged, please check your simulation setup. Divergence can also be caused by bad elements in the mesh. Such elements tend to exist near walls and sharp corners. Visually inspect your mesh to locate them and re-mesh with additional refinements in their vicinity. If you are confident about the mesh-quality, please reduce relaxation factors and use more conservative numerical schemes.”
or
“Temperature fields diverging”
when I am running a mach 1.5 wind tunnel with a CADed model. pls look at the project, as I only wanted to make some particle traces.
The Velocity inlet is > 800 m/s. This means the Mach number will be much bigger than 1 (Mach = U/c, where c is the speed of sound ~ 343 m/s). In general, the compressible solver handles up to 0.7-0.8 well, but a case with a Mach number close to 3 will probably fail.
Have you checked the Reynolds number? I expect the ‘Laminar’ mode will have to be switched to a turbulent model.
In contrast with the Incompressible analysis, the pressure outlet here is not Gauge. Try switching the input to 101325 Pa instead of 0 Pa.
If the model is symmetric, you can simulate just half of it to reduce computation costs.
