[Rising Star]

hi everybody

I'm completely new to openfoam and CFD world, so please be patient if my request seems stupid

for studying purposes I've to simulate a wavetank including a floating plate. During my researches I've found that waves2foam is more or less what I need, but I don't know what I've to do to add the floating object, for example to the waveflume tutorial.

I'm running openfoam 2.3.0, and I've found the tutorial linked here (https://sites.google.com/site/jordim...ic-mesh-motion) but it's not working at all, since it's designed for OF 1.7.1

could you please help me?

tnx in advance

Best Regards

[Rising Star]

hi everybody

I think I've coupled waves2foaam with interdymfoam (i'm a newbie), so I've tried to put a floating object inside the flume tutorial, but the simulation crashes immediately

this is the error I get

Centre of mass: (10.125 -0.0881379 0.05)
Linear velocity: (-0.034629 -43.6092 6.78388e-05)
Angular velocity: (-13839 8.03976 -10.6603)
Execution time for mesh.update() = 0.07 s
GAMGPCG: Solving for pcorr, Initial residual = 1, Final residual = 4.64817e-06, No Iterations 8
GAMGPCG: Solving for pcorr, Initial residual = 0.0490237, Final residual = 4.62368e-06, No Iterations 4
time step continuity errors : sum local = 3.06048e-06, global = 2.01192e-07, cumulative = 1.18549e-07
smoothSolver: Solving for alpha.water, Initial residual = 0.00160084, Final residual = 6.28579e-09, No Iterations 17
Phase-1 volume fraction = 0.5637 Min(alpha1) = 0 Max(alpha1) = 1.892
MULES: Correcting alpha.water
Phase-1 volume fraction = 0.5637 Min(alpha1) = -6.15106 Max(alpha1) = 76.4838
Relaxing time: 0.03 s
#0 Foam::error:rintStack(Foam::Ostream&) at ??:?
#1 Foam::sigFpe::sigHandler(int) at ??:?
#2 in "/lib/x86_64-linux-gnu/libc.so.6"
#3 Foam::GAMGSolver::scale(Foam::Field<double>&, Foam::Field<double>&, Foam::lduMatrix const&, Foam::FieldField<Foam::Field, double> const&, Foam::UPtrList<Foam::lduInterfaceField const> const&, Foam::Field<double> const&, unsigned char) const at ??:?
#4 Foam::GAMGSolver::Vcycle(Foam::PtrList<Foam::lduMa trix::smoother> const&, Foam::Field<double>&, Foam::Field<double> const&, Foam::Field<double>&, Foam::Field<double>&, Foam::Field<double>&, Foam::Field<double>&, Foam::Field<double>&, Foam::PtrList<Foam::Field<double> >&, Foam::PtrList<Foam::Field<double> >&, unsigned char) const at ??:?
#5 Foam::GAMGSolver::solve(Foam::Field<double>&, Foam::Field<double> const&, unsigned char) const at ??:?
#6 Foam::fvMatrix<double>::solveSegregated(Foam::dict ionary const&) at ??:?
#7 Foam::fvMatrix<double>::solve(Foam::dictionary const&) at ??:?
#8
at ??:?
#9 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6"
#10
at ??:?

those are the files I'm using
https://www.dropbox.com/s/z6h5nhm8sr...me.tar.gz?dl=0


please help me, I'm stuck and I don't know how to solve this situation

thanks in advance
best regards

[Olbap]

@Rising : I ran your case and found the same error, although changing the time scheme seems to change the error time. So I tried to output what happens before the crash, and it seems your floating object is not well defined, the wave field just crashes into it: I don't know what happens exactly but the Courant number explodes and the maximum water fraction is way above 1. It looks like and obstacle.
I have no solid advice, but have you tried either 1) your waveDymFoam on a known tutorial like waveFlume 2) to put a floating object using just waveFoam (or interFoam)? What were the results?
Best,
Pablo