Question #683336 on Yade changed: https://answers.launchpad.net/yade/+question/683336
Deepak proposed the following answer: I've noticed that the max Courant No. is 3.7703, that doesn't look good...have you tried decreasing the time step in Yade? On Fri, Sep 13, 2019 at 11:36 AM Deepak Kn <[email protected]> wrote: > Hi, > I need to have a look at the case, boundary conditions and things to > identify why this happens (my best bet is bad physics/numerical settings), > paraFoam can be used to view parallel cases, did you have a look into the > openfoam documentation/coupling documentation? The methods to post process > parallel > cases are there .. > > https://cfd.direct/openfoam/user-guide/v6-paraview/ > https://yade-dem.org/doc/FoamCoupling.html#post-processing > > On Fri, Sep 13, 2019 at 11:09 AM Anqi H < > [email protected]> wrote: > >> Question #683336 on Yade changed: >> https://answers.launchpad.net/yade/+question/683336 >> >> Status: Answered => Open >> >> Anqi H is still having a problem: >> Hi Deepak, >> >> I'm running the same simulation with icoFoam for 0.05s, the particles >> are defined in fluidCouplingIDList and dynamic is disabled. The fluid >> case without the particles converges in openFoam, but after the >> particles are included, the simulation hangs after 0.01275s. I've been >> having trouble understanding why the program hangs here as the courant >> number is smaller than 0.5. The terminal output is copied to this post. >> Another question is about inspecting p,U properties of the fluid cells, >> since they are saved under two directories processor0,1, does it mean >> paraFoam cannot be used in this case? Thank you. >> >> Time = 0.01275 >> >> Courant Number mean: 0.142852 max: 3.7703 >> smoothSolver: Solving for Ux, Initial residual = 0.560774, Final >> residual = 7.25301e-06, No Iterations 13 >> smoothSolver: Solving for Uy, Initial residual = 0.210176, Final >> residual = 8.97415e-06, No Iterations 10 >> smoothSolver: Solving for Uz, Initial residual = 0.580007, Final >> residual = 8.33788e-06, No Iterations 13 >> DICPCG: Solving for p, Initial residual = 0.87801, Final residual = >> 0.0268803, No Iterations 11 >> DICPCG: Solving for p, Initial residual = 0.0229963, Final residual = >> 0.00113944, No Iterations 9 >> DICPCG: Solving for p, Initial residual = 0.00111865, Final residual = >> 4.86087e-05, No Iterations 11 >> time step continuity errors : sum local = 2.63805e-06, global = >> -2.6854e-07, cumulative = 2.84037e-06 >> DICPCG: Solving for p, Initial residual = 0.216622, Final residual = >> 0.00789831, No Iterations 10 >> DICPCG: Solving for p, Initial residual = 0.00936633, Final residual = >> 0.000371535, No Iterations 11 >> DICPCG: Solving for p, Initial residual = 0.000378234, Final residual = >> 9.57322e-07, No Iterations 17 >> time step continuity errors : sum local = 3.7861e-08, global = >> 3.12631e-09, cumulative = 2.8435e-06 >> ExecutionTime = 99.51 s ClockTime = 100 s >> >> -- >> You received this question notification because your team yade-users is >> an answer contact for Yade. >> >> _______________________________________________ >> Mailing list: https://launchpad.net/~yade-users >> Post to : [email protected] >> Unsubscribe : https://launchpad.net/~yade-users >> More help : https://help.launchpad.net/ListHelp >> > -- You received this question notification because your team yade-users is an answer contact for Yade. _______________________________________________ Mailing list: https://launchpad.net/~yade-users Post to : [email protected] Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp
