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Supersonic flow over a cylinder

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Old   June 1, 2018, 14:11
Exclamation Supersonic flow over a cylinder
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Vishish Behera
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I am simulating a supersonic laminar flow over a cylinder and this error has stalled me for a while/ I've already checked the other threads, and none of them worked so far.

What can be the problem?


Create mesh for time = 0


PIMPLE: no residual control data found. Calculations will employ 2 corrector loops

Reading thermophysical properties

Selecting thermodynamics package
{
type hePsiThermo;
mixture pureMixture;
transport const;
thermo hConst;
equationOfState perfectGas;
specie specie;
energy sensibleInternalEnergy;
}

Reading field U

Reading/calculating face flux field phi

Creating turbulence model

Selecting turbulence model type laminar
Creating field kinetic energy K

No MRF models present

No finite volume options present


Starting time loop

Time = 5e-07

Courant Number mean: 0.0597729 max: 1.37857
diagonal: Solving for rho, Initial residual = 0, Final residual = 0, No Iterations 0
PIMPLE: iteration 1
smoothSolver: Solving for Ux, Initial residual = 0.667594, Final residual = 0.239997, No Iterations 1000
smoothSolver: Solving for Uy, Initial residual = 0.999981, Final residual = 4.26033e-07, No Iterations 3
smoothSolver: Solving for e, Initial residual = 1, Final residual = 9.68353e-06, No Iterations 116
[0] #0 Foam::error:rintStack(Foam::Ostream&) at ??:?
[0] #1 Foam::sigFpe::sigHandler(int) at ??:?
[0] #2 ? in "/lib/x86_64-linux-gnu/libc.so.6"
[0] #3 Foam::symGaussSeidelSmoother::smooth(Foam::word const&, Foam::Field<double>&, Foam::lduMatrix const&, Foam::Field<double> const&, Foam::FieldField<Foam::Field, double> const&, Foam::UPtrList<Foam::lduInterfaceField const> const&, unsigned char, int) at ??:?
[0] #4 Foam::symGaussSeidelSmoother::smooth(Foam::Field<d ouble>&, Foam::Field<double> const&, unsigned char, int) const at ??:?
[0] #5 Foam::smoothSolver::solve(Foam::Field<double>&, Foam::Field<double> const&, unsigned char) const at ??:?
[0] #6 Foam::fvMatrix<double>::solveSegregated(Foam::dict ionary const&) at ??:?
[0] #7 Foam::fvMatrix<double>::solve(Foam::dictionary const&) at ??:?
[0] #8 Foam::fvMatrix<double>::solve() at ??:?
[0] #9 ? at ??:?
[0] #10 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6"
[0] #11 ? at ??:?
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Old   June 1, 2018, 16:04
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From the error output, you can see that Ux takes 1000 iterations and your CFL number is above 1. Decrease your initial timestep and max Co number as a first step to working out the problem.

Caelan
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