TAGGED: bc, divergence, k-epsilon, turbulence
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April 22, 2021 at 2:55 am
luisaciriaco
SubscriberHello guys, nI'm having problems with my simulation and I don't know for sure what is happening. If anyone could help me, I'd really appreciate it.nMy simulation is an intake from a reservoir, where the inlet is a constant velocity (velocity-inlet BC) and the outlet works like a valve, so I have a governing equation for my outlet, which is:(730.39 [kg s^-2] * Time), and I'm using mass-flow-outlet BC. My mesh has good values for ortogonality quality and skewness.nHowever, after some interactions of standard k-epsilon, the calculation crashes and returns the message:Error at Node 2:floating point exceptionnError at Node 0:floating point exceptionnError at Node 1:floating point exceptionnError at Node 3:floating point exception    nStabilizing epsilon to enhance linear solver robustness.    nStabilizing epsilon using GMRES to enhance linear solver robustness.nDivergence detected in AMG solver:epsilon nturbulent viscosity limited to viscosity ratio of 1.000000e+05 in 61502 cells nDivergence detected in AMG solver:epsilonnDivergence detected in AMG solver:epsilonnDivergence detected in AMG solver:epsilonnError at host:floating point exceptionI'm using hybrid initialization. Does anyone know how to solve this, please?nThank you in advance,nLuisa. -
April 26, 2021 at 9:33 pm
RK
Ansys EmployeeHello, nMay I know which version you are using? Did you try the k-omega SST?n
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