calculation stops and BICGStab did not converge

vandermessi · March 5, 2012, 20:38

When I try to run the calculation, it failed and the output is as below, who has met this problem and solved it?

BiCGStab did not converge !
* CFL 5.00000e+00 -> 5.00000e-01...
BiCGStab did not converge !
A floating point exception has occurred: floating point exception [Invalid operation]. The specific cause cannot be identified. Please refer to the troubleshooting section of the User's Guide.
Command: RunSimulation
CompletedCommand: RunSimulation
In: [Machine::main, SimulationIterator::startSimulation, SteadySolver::step]
error: Server Error

siara817 · March 6, 2012, 03:19

I had this problem, and it was because of the mesh quality. check the cell quality by Threshold. Find the worst cells. choose the Cell quality remediation model in the Physics models. Also you can right click on your regions and remove the low quality cell if they are few.
good luck

March 5, 2012, 20:38	calculation stops and BICGStab did not converge	#1
vandermessi New Member Xiao Liu Join Date: Mar 2012 Posts: 1 Rep Power: 0	When I try to run the calculation, it failed and the output is as below, who has met this problem and solved it? BiCGStab did not converge ! * CFL 5.00000e+00 -> 5.00000e-01... BiCGStab did not converge ! A floating point exception has occurred: floating point exception [Invalid operation]. The specific cause cannot be identified. Please refer to the troubleshooting section of the User's Guide. Command: RunSimulation CompletedCommand: RunSimulation In: [Machine::main, SimulationIterator::startSimulation, SteadySolver::step] error: Server Error

March 6, 2012, 03:19		#2
siara817 Senior Member siamak rahimi ardkapan Join Date: Jul 2010 Location: Copenhagen, Denmark Posts: 220 Rep Power: 17	I had this problem, and it was because of the mesh quality. check the cell quality by Threshold. Find the worst cells. choose the Cell quality remediation model in the Physics models. Also you can right click on your regions and remove the low quality cell if they are few. good luck aniramzee likes this.