Hello, I have described three geometries and problems for you below. Thank you for guiding me.
1. A vortex generator and around 3 million meshes are used in 3D airfoil geometry. Utilizing the VOF and LES turbulence models for cavitation modeling. pressure outlet boundary type: 143300.25 pascal and velocity inlet boundary type: 15.02 m/s2. microdimensional 3D cylinder geometry with 700 thousand meshes. Utilizing the VOF and LES turbulence models for cavitation modeling. pressure inlet boundary: 1,000,000 pascalpressure outlet boundary: 100,000 pascal3.0 cylinder geometry with roughly 70 thousand meshes in micro dimensions in 2D dimensions. Utilizing the VOF and DES turbulence models, we simulate cavitation. The second case's input and output boundaries are identical in both type and quantity.
Changes that were put to the test included altering the relaxation factor, adjusting the turbulence model in case 1 and the time step in case 1.
In all of the above cases, the solution diverges, and you will see the message before the divergence in the software. Reversed flow on the pressure outlet's xxx faces 4. The identical mistake and reversed flow on xxx faces of the pressure inlet 6 are present in the first case. The residuals graph begins to diverge, and the lift and drag numbers are either extremely huge or very small and negative.
The majority of writing on the internet is done in small domains, but I entered the domain in each of the three models precisely as it appeared in the appropriate article.
Could you kindly explain what the issue could be?
Thanks a lot.
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