cyclicAMI一算就挂。。

[lllwonderliquid]

大家好。。最近在计算一个水翼的流场。。此前设置的计算域如下图所示，计算起来没问题；但这两天认为计算域的侧面不应是symmetry堆成边界条件，而应该设成周期性会好一些。然后在算例文件中用cyclicAMI设置周期性边界条件后就出问题了，两条边的网格吻合应该没问题，但是一算就挂。。下面贴出boundary文件和Log，大家知道这是什么原因吗？

boundary

/*--------------------------------*- C++ -*----------------------------------*\
| =========                 |                                                 |
| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
|  \\    /   O peration     | Version:  4.1                                   |
|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
|    \\/     M anipulation  |                                                 |
\*---------------------------------------------------------------------------*/
FoamFile
{
    version     2.0;
    format      ascii;
    class       polyBoundaryMesh;
    location    "constant/polyMesh";
    object      boundary;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

6
(
    INLET
    {
        type            patch;
        nFaces          7076;
        startFace       8338533;
    }
    OUTLET
    {
        type            patch;
        nFaces          22156;
        startFace       8345609;
    }
    TOPANDDOWN
    {
        type            wall;
        inGroups        1(wall);
        nFaces          36424;
        startFace       8367765;
    }
    WING
    {
        type            wall;
        inGroups        1(wall);
        nFaces          9744;
        startFace       8404189;
    }
    FRONT
    {
        type            cyclicAMI;
        inGroups        1(cyclicAMI);
        nFaces          24139;
        startFace       8413933;
	matchTolerance	0.001;
	transform	translational;
	separationVector (0 0 -0.102);
	neighbourPatch	BACK;
	
    }
    BACK
    {
        type            cyclicAMI;
        inGroups        1(cyclicAMI);
        nFaces          24139;
        startFace       8438072;
	matchTolerance	0.001;
	transform	translational;
	separationVector (0 0 0.102);
	neighbourPatch	FRONT;
    }
)

// ************************************************************************* //

log

/*---------------------------------------------------------------------------*\
| =========                 |                                                 |
| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
|  \\    /   O peration     | Version:  4.1                                   |
|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
|    \\/     M anipulation  |                                                 |
\*---------------------------------------------------------------------------*/
Build  : 4.1
Exec   : simpleFoam
Date   : Sep 13 2018
Time   : 11:43:26
Host   : "Lzh_HP_Z420_Workstation"
PID    : 13508
Case   : /home/lzh/20180824Waveydro/SST
nProcs : 1
sigFpe : Enabling floating point exception trapping (FOAM_SIGFPE).
fileModificationChecking : Monitoring run-time modified files using timeStampMaster
allowSystemOperations : Allowing user-supplied system call operations

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
Create time

Create mesh for time = 0


SIMPLE: convergence criteria
    field p	 tolerance 1e-06
    field U	 tolerance 1e-06
    field "(k|epsilon|omega|f|v2)"	 tolerance 1e-06

Reading field p

AMI: Creating addressing and weights between 24139 source faces and 24139 target faces
AMI: Patch source sum(weights) min/max/average = 0, 1, 0.998589
AMI: Patch target sum(weights) min/max/average = 0, 1, 0.997104
Reading field U

Reading/calculating face flux field phi

Selecting incompressible transport model Newtonian
Selecting turbulence model type RAS
Selecting RAS turbulence model kOmegaSST
Selecting patchDistMethod meshWave
bounding k, min: 0 max: 0.0068 average: 0.0068
bounding omega, min: 0 max: 6.668 average: 6.668
kOmegaSSTCoeffs
{
    alphaK1         0.85;
    alphaK2         1;
    alphaOmega1     0.5;
    alphaOmega2     0.856;
    gamma1          0.555556;
    gamma2          0.44;
    beta1           0.075;
    beta2           0.0828;
    betaStar        0.09;
    a1              0.31;
    b1              1;
    c1              10;
    F3              false;
}

No MRF models present

No finite volume options present


Starting time loop

surfaceRegion flowRatePatch:
    total faces  = 22156
    total area   = 0.0306


Time = 1

smoothSolver:  Solving for Ux, Initial residual = 0.999998, Final residual = 0.0462183, No Iterations 3
smoothSolver:  Solving for Uy, Initial residual = 1, Final residual = 0.0664053, No Iterations 3
smoothSolver:  Solving for Uz, Initial residual = 1, Final residual = 0.0408965, No Iterations 4
#0  Foam::error::printStack(Foam::Ostream&) at ??:?
#1  Foam::sigFpe::sigHandler(int) at ??:?
#2  ? in "/lib/x86_64-linux-gnu/libc.so.6"
#3  Foam::divide(Foam::Field<double>&, double const&, Foam::UList<double> const&) at ??:?
#4  ? at ??:?
#5  Foam::tmp<Foam::GeometricField<double, Foam::fvPatchField, Foam::volMesh> > Foam::operator/<Foam::fvPatchField, Foam::volMesh>(Foam::dimensioned<double> const&, Foam::tmp<Foam::GeometricField<double, Foam::fvPatchField, Foam::volMesh> > const&) at ??:?
#6  ? at simpleFoam.C:?
#7  ? at ??:?
#8  __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6"
#9  ? at ??:?

[李东岳]

Foam::divide(Foam::Field<double>&, double const&, Foam::UList<double> const&) at ??:?表示除以0了，你这个如果网格吻合，可以设置成cyclic

[lllwonderliquid]

@东岳 openfoam显示不是完全吻合，用cyclic会出问题，加大tolerance也不管用，反而tolerance调得越大，显示的不匹配度越高

[李东岳]

网格用什么做的？数量多少？

[lllwonderliquid]

@东岳icem,数量200多万，不过问题貌似已成功解决 谢谢东岳前辈，捣鼓了一下午，正准备在下面分享一下我的经验

[lllwonderliquid]

问题貌似已成功解决。。捣鼓一下午，先在icem Global Mesh Parameters 里设置periodicity，然后转化到openfoam网格，使用cyclic边界条件，发现单核运行已经可以了；但是并行计算出现了问题，不能计算。于是在decomposeParDict文件中使用preservePatches工具，使对应的两个周期面在执行decomposePar时可以被分在一个域，设置完后，计算畅通无阻

[李东岳]

楼主好人，感谢分享，1024

[Foamer24]

@lllwonderliquid 楼主您好！我用pointwise绘制网格导入openfoam，加上setSet操作，也可以计算周期边界，这个操作可能和icem中设置periodicity是等价的。 不过，不知道楼主有没有考虑过加密壁面的网格进行计算？网格一加密，我调openfoam时，就会出现问题，算不起来。

[一颗橙子]

@Foamer24 你好可以分享下您关于setSet的具体操作吗