[alex.leo]

Hi everybody!
this is the first time I write in this forum, but I've been reading it for a while and I've always found very useful tips in it.
For my thesis I'm trying to simulate the passage of a truck under an obstacle, so I split the mesh into two parts, a stationary top and a sliding part underneath, I made outlet and inlet periodic and I set the interface between the two parts as "periodic repeats" according to the scheme stator-rotor.The model is 2d and the turbulence model is Spalart-Allmaras.
I would like to simulate the passage of the truck several times under the same obstacle, but when it gets to the left limit and reappears on the right, the solver does not converge and the results from this point have no meaning, since I see extremely high values of pressure and velocity.
I don't know if I'm missing something or if I set the problem in the wrong way.

I would be very grateful if you could help me!

alex.leo

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