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btrueblood, I understand, thank you.

Even this 1/4 model is calculated more than 8 hours. I need to calculate 10 such models. I search the way how to reduce the calculation time.

I use Abaqus 6.11-3. Sometimes, after long time calculation and using user python scripts Abaqus exit with error: GUI detected error while waiting for ipc connection to close. Abaqus Error: Abaqus/CAE Kernel exited with an error. I searched about this problem and found this advice: GUI detected...

btrueblood, I try to model the ball check valve. I can not pick the pipe axis as the symmetric axis because Abaqus does not allow it. Abaqus support only 3D and 2D-plane CFD models. The question is how to build the axisymmetric model by setting axisymmetric Boundary Conditions on 3D or 2D-plane...

Need help to build the CFD model of the ball valve in Abaqus 6.11-3 (see picture). The problem is that calculation 3D model takes a long time. I tried to build 2D-planar model (see right picture) where: 1 - wall, 2 - inlet velocity, 3 - outlet pressure, 4 - symmetry BC (normal velocity = 0)...

Please help to improve the CFD model of the ball valve in Abaqus 6.11-3. I attached the model file. The problem is that calculation takes a long time and sometimes (when mesh is a smaller) ends with the error. Maybe something wrong in the Boundary Conditions or in the Predefined Fields. If not...