[viraj20feb]

Hello everyone,

I am trying to run a simulation for flow in a 3Dpipe using icoFsiFoam solver. The simulation runs for a few time step and then I get the following error: Floating point exception (core dumped)

Here are the last few lines from the log file

CG:  Solving for Uz, Initial residual = 0.0602607, Final residual = 8.44523e-07, No Iterations 39
CG:  Solving for Ux, Initial residual = 0.0534526, Final residual = 8.99213e-07, No Iterations 43
CG:  Solving for Uy, Initial residual = 0.0592687, Final residual = 8.51608e-07, No Iterations 37
CG:  Solving for Uz, Initial residual = 0.06021, Final residual = 8.46143e-07, No Iterations 39
CG:  Solving for motionUx, Initial residual = 0.998838, Final residual = 8.95747e-07, No Iterations 54
CG:  Solving for motionUy, Initial residual = 0.999454, Final residual = 8.32624e-07, No Iterations 49
CG:  Solving for motionUz, Initial residual = 0.999492, Final residual = 8.03547e-07, No Iterations 49
volume continuity errors : volume = 5.38224e+22, max error = 1.48662e+08, sum local = -3.42232e-10, global = 3.18263e-11
Motion magnitude: mean = 163763 max = 7.13186e+08
BiCGStab:  Solving for Ux, Initial residual = 0.976841, Final residual = 1.62403e-13, No Iterations 1
BiCGStab:  Solving for Uy, Initial residual = 0.973204, Final residual = 2.82037e-13, No Iterations 1
BiCGStab:  Solving for Uz, Initial residual = 0.999744, Final residual = 1.96498e-13, No Iterations 1
CG:  Solving for p, Initial residual = 0.983696, Final residual = 0.704135, No Iterations 1000
CG:  Solving for p, Initial residual = 0.997927, Final residual = 0.136384, No Iterations 1000
Moving mesh time step continuity errors : sum local = -505.028, global = 2, cumulative = 2.00278
Floating point exception (core dumped)

I am attaching the complete log file. Can anyone help?

[Taataa]

Considering large courant numbers, there are probably some issues with your boundary conditions, schemes, solution and even time step. So basically there are many possibilities depending on your case setup which you didn't provide.

[viraj20feb]

Originally Posted by Taataa

Considering large courant numbers, there are probably some issues with your boundary conditions, schemes, solution and even time step. So basically there are many possibilities depending on your case setup which you didn't provide.

Hi Taataa,

Please find the case files on this link:

https://drive.google.com/open?id=0B20W2X0QYDYJdGhxQk42dDBpWms