DPMFoam 计算时出现奇怪报错

ZYj

最近在计算DPMFfoam时，出现了如下的报错

Evolving kinematicCloud

Solving 2-D cloud kinematicCloud
    23 move-collide subCycles


--> FOAM FATAL ERROR: 
Patch data was requested for a particle that isn't on a patch

    From function void Foam::particle::patchData(Foam::vector&, Foam::vector&) const
    in file particle/particle.C at line 941.

FOAM exiting

我在kinematicCloudProperties中设置了粒子间的碰撞和一些cloudFunctions，具体如下

pairCollisionCoeffs
    {
        maxInteractionDistance  1e-5;

        writeReferredParticleCloud no;

        pairModel pairSpringSliderDashpot;

        pairSpringSliderDashpotCoeffs
        {
            useEquivalentSize   no;
            alpha               0.12;
            b                   1.5;
            mu                  0.52;
            cohesionEnergyDensity 0;
            collisionResolutionSteps 12;
        };

        wallModel wallLocalSpringSliderDashpot;

        wallLocalSpringSliderDashpotCoeffs
        {
            useEquivalentSize no;
            collisionResolutionSteps 12;
            walls
            {
                youngsModulus   2e10;
                poissonsRatio   0.28;
                alpha           0.12;
                b               1.5;
                mu              0.43;
                cohesionEnergyDensity 0;
            }
            frontAndBack
            {
                youngsModulus   2e10;
                poissonsRatio   0.28;
                alpha           0.12;
                b               1.5;
                mu              0.1;
                cohesionEnergyDensity 0;
            }
        };

        U     U.water;
    }

和

cloudFunctions
{
    patchPostProcessing1
    {
        type            patchPostProcessing;
        maxStoredParcels 100000;
        patches         ( outlet inlet walls);
    }
    particleTracks1
    {
        type            particleTracks;
        trackInterval   10;
        maxSamples      1000000;
        resetOnWrite    yes;
    }
    particleErosion1
    {
    type            particleErosion;
    p               11000000; //yield stress for aluminium = 11000000 Pa or 11 MPa
    psi             2;//Ratio of the depth of contact to the depth of cut (default value = 2 )
    K               2; //Ratio of vertical to horizontal force components (2 for angular abrassive grains)
    patches
      ( walls);       
   }  
}

我如果这两个均不设置，则没有问题。报错部分的源代码如下

void Foam::particle::patchData(vector& n, vector& U) const
{
    if (!onBoundaryFace())
    {
        FatalErrorInFunction
            << "Patch data was requested for a particle that isn't on a patch"
            << exit(FatalError);
    }

请问有人知道这是什么问题吗？万分感谢！

ZYj

后来我发现我的这个cloudFunctions和pairCollisionCoeffs 2选1的话就不会报错，但是有人能解释下为什么吗？如果两个都想要的话又该怎么设置呢？

东岳

你把cloudFunctions取消没问题是吧？

然后你把碰collision去掉，保留cloudFunction也没问题？

ZYj

@东岳对的

东岳

更改下wall的壁面类型解决问题么，改成stick合适么？

感觉是你的粒子腐蚀方面的问题，去掉后怎样

ZYj

腐蚀不能去掉，目的就是算腐蚀。改成stick后会不会不符合实际呢？总之，我先改了试试。

ZYj

@东岳 wo我把除了inlet和outlet的patch都改为stick，然而一样的结果，一样的报错信息。