I found a configuration that created a successful run but with way too high forces. I think (although the CAD is watertight) that the intersections still need to be fixed and the geometry needs to be cleaned up a bit further.
In general splitting the surfaces is a must for the boundary layer to establish during the meshing process. Usually it might be better (also for efficient face picking) to sum up the small faces of the front wing lets say to a single “group” or faces called “front wing” for instance.
I was changing the relaxation factors, a bit of the residual control and non-orthogonal correctors that are used for the pressure equation and repeat it which may reduce the influence of bad computational mesh but when the force is over 2E+101 even the correctors won’t help So it is good that you created some result control items to see if the results are in the right order of magnitude.
I can implement points 1 and 2 but for 3 i have to convert them into an STL format and import it, but i dont know how to split the whole body into the different parts that i need. Can you tell me how can i do that
What CAD program are you using. I can join individual surfaces into polysurfaces and then join say 7 polysurfaces into the closed polysurface solid model that SimScale can import. Then SimScale sees it as watertight solid with 7 surfaces and each surface can have refinements made to them.
If I have an airfoil that is one surface/polysurface from top Trailing edge corner to bottom trailing edge corner and you need to split it at the leading edge, I do that with either a split at isocurve or split it with a line properly positioned for splitting. Then I join all my polysurfaces into a closed polysurface (solid), then it goes to SimScale, which now recognizes a top and bottom surface and a trailing edge vertical surface.
Earlier the % inflated was around 92 but after “Use relative size for layers’ is off (false).” (point 12) and making the face aspect ratio for layers at 110, The mesh that was generated was hugely distorted with % inflation for a lot of my faces being really low, Although on running a simulation on it, It was able to run for a slightly more time steps before it diverged
I was able to merge the front and the rear wing togther in catia using the bollean operation but still i dont have an idea of how to merge the surfaces on the body, Can i do it using onshape or is there some other CAD design