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@李东岳 李老师，您好，在我将./Allwmake -j改为./Allwmake -j8后不再出现这个问题，但是出现了另一个问题

sed: can't read /home/guo/.bashrc: No such file or directory

使用的安装命令还是您提供的命令，我是需要新建一个.bashrc文件吗？

命令如下：

cd $HOME &&
if [ ! -d "OpenFOAM" ];then mkdir OpenFOAM; fi &&
sudo apt update &&
sudo apt-get install -y build-essential flex bison git-core cmake zlib1g-dev libboost-system-dev libboost-thread-dev libopenmpi-dev openmpi-bin gnuplot libreadline-dev libncurses-dev libxt-dev &&
cd OpenFOAM &&
git clone https://e.coding.net/dyfluid/OpenFOAM/OpenFOAM-10.git &&
git clone https://e.coding.net/dyfluid/OpenFOAM/ThirdParty-10.git &&
source OpenFOAM-10/etc/bashrc &&
cd OpenFOAM-10 &&
./Allwmake -j8 &&
sed -i '$a source $HOME/OpenFOAM/OpenFOAM-10/etc/bashrc' $HOME/.bashrc

使用李老师给的安装方法安装openfoam10的时候会出现以下报错：

g++: fatal error: Killed signal terminated program cc1plus
compilation terminated.
make: *** [/home/guo/OpenFOAM/OpenFOAM-10/wmake/rules/General/transform:26: /home/guo/OpenFOAM/OpenFOAM-10/platforms/linux64GccDPInt32Opt/src/finiteVolume/interpolation/surfaceInterpolation/schemes/pointLinear/pointLinear.o] Error 1
make: *** Waiting for unfinished jobs....

求大神指导是什么原因，使用的是win11系统，ubuntu 22.04.5 LTS，内存16GB，是不是内存太少不够用？

看论文的时候看到了这种速度云图，有大神知道是如何后处理得到的吗，可以通过tecplot实现吗？

@李东岳 李老师你好，我将时间步长调小后依然会出现库朗数增大的情况，但是我发现每次都在迭代到0.23s左右出现这种情况，这是否与我入口速度的边界条件有关？

这是我入口速度的波形图

最近在使用openFOAM对下肢血管进行血流动力学模拟，为了更准确所以在入口处使用了随时间变化的边界条件，但计算一段时间后，库朗数会突然增大，然后程序报错停止，有没有大神可以帮忙看看应该如何修改设置。
版本：openfoam 10
求解器：pimpleFoam
U文件，入口速度方向是z轴的负方向

boundaryField
{
    WALL
    {
        type            noSlip;
    }

    INLET
    {
        type			uniformFixedValue;
		uniformValue	
		{
			type		tableFile;
			file		"v.txt";
		}
		value			(0 0 -0.032180);
    }

    OUTLET1
    {
        type            zeroGradient;   
    }

   OUTLET2
    {
        type            zeroGradient;   
    }

controlDict文件

application     pimpleFoam;

startFrom       startTime;

startTime       0;

stopAt          endTime;

endTime         0.7;

deltaT          1e-5;

writeControl    adjustableRunTime;

writeInterval   0.01;

purgeWrite      0;

fvSolution文件

solvers
{
    p
    {
        solver           GAMG;
        tolerance        1e-7;
        relTol           0.1;
	preconditioner  DIC;
        smoother        symGaussSeidel;
	nCellsInCoarsestLevel    10;
	mergeLevels      1;
    }

    pFinal
    {
        $p;
        relTol          0.1;
    }

    U
    {
        solver          smoothSolver;
        smoother        symGaussSeidel;
        tolerance       1e-05;
        relTol          0.1;
    }

    UFinal
    {
        $U;
        relTol          0.1;
    }
}

fvSchemes文件

ddtSchemes
{
    default         Euler;
}

gradSchemes
{
    default         Gauss linear;
}

divSchemes
{
    default             none;

    div(phi,U)          Gauss linearUpwind grad(U);

    div((nuEff*dev2(T(grad(U))))) Gauss linear;
}

laplacianSchemes
{
    default         Gauss linear corrected;
}

interpolationSchemes
{
    default         linear;
}

snGradSchemes
{
    default         corrected;
}

@李东岳 李老师你好，我又检查了一下，发现这个应该不是报错的主要原因，完整的报错如下

Courant Number mean: 46953315.2932 max: 138977110367
Time = 0.015s

[10] #0  Foam::error::printStack(Foam::Ostream&) at ??:?
[10] #1  Foam::sigFpe::sigHandler(int) at ??:?
[10] #2  ? in "/lib/x86_64-linux-gnu/libc.so.6"
[10] #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 ??:?
[10] #4  Foam::symGaussSeidelSmoother::smooth(Foam::Field<double>&, Foam::Field<double> const&, unsigned char, int) const at ??:?
[10] #5  Foam::smoothSolver::solve(Foam::Field<double>&, Foam::Field<double> const&, unsigned char) const at ??:?
[10] #6  ? in "/home/g/OpenFOAM/OpenFOAM-10/platforms/linux64GccDPInt32Opt/bin/pimpleFoam"
[10] #7  ? in "/home/g/OpenFOAM/OpenFOAM-10/platforms/linux64GccDPInt32Opt/bin/pimpleFoam"
[10] #8  ? in "/home/g/OpenFOAM/OpenFOAM-10/platforms/linux64GccDPInt32Opt/bin/pimpleFoam"
[10] #9  ? in "/home/g/OpenFOAM/OpenFOAM-10/platforms/linux64GccDPInt32Opt/bin/pimpleFoam"
[10] #10  ? in "/lib/x86_64-linux-gnu/libc.so.6"
[10] #11  __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6"
[10] #12  ? in "/home/g/OpenFOAM/OpenFOAM-10/platforms/linux64GccDPInt32Opt/bin/pimpleFoam"
[DESKTOP-PM8FS88:01170] *** Process received signal ***
[DESKTOP-PM8FS88:01170] Signal: Floating point exception (8)
[DESKTOP-PM8FS88:01170] Signal code:  (-6)
[DESKTOP-PM8FS88:01170] Failing at address: 0x3e800000492
[DESKTOP-PM8FS88:01170] [ 0] /lib/x86_64-linux-gnu/libc.so.6(+0x42520)[0x7f9e44753520]
[DESKTOP-PM8FS88:01170] [ 1] /lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x12c)[0x7f9e447a79fc]
[DESKTOP-PM8FS88:01170] [ 2] /lib/x86_64-linux-gnu/libc.so.6(raise+0x16)[0x7f9e44753476]
[DESKTOP-PM8FS88:01170] [ 3] /lib/x86_64-linux-gnu/libc.so.6(+0x42520)[0x7f9e44753520]
[DESKTOP-PM8FS88:01170] [ 4] /home/g/OpenFOAM/OpenFOAM-10/platforms/linux64GccDPInt32Opt/lib/libOpenFOAM.so(_ZN4Foam22symGaussSeidelSmoother6smoothERKNS_4wordERNS_5FieldIdEERKNS_9lduMatrixERKS5_RKNS_10FieldFieldIS4_dEERKNS_8UPtrListIKNS_17lduInterfaceFieldEEEhi+0x40c)[0x7f9e4519c36c]
[DESKTOP-PM8FS88:01170] [ 5] /home/g/OpenFOAM/OpenFOAM-10/platforms/linux64GccDPInt32Opt/lib/libOpenFOAM.so(_ZNK4Foam22symGaussSeidelSmoother6smoothERNS_5FieldIdEERKS2_hi+0x2c)[0x7f9e4519c71c]
[DESKTOP-PM8FS88:01170] [ 6] /home/g/OpenFOAM/OpenFOAM-10/platforms/linux64GccDPInt32Opt/lib/libOpenFOAM.so(_ZNK4Foam12smoothSolver5solveERNS_5FieldIdEERKS2_h+0x3b9)[0x7f9e45192759]
[DESKTOP-PM8FS88:01170] [ 7] pimpleFoam(+0x7c88d)[0x55846bbec88d]
[DESKTOP-PM8FS88:01170] [ 8] pimpleFoam(+0x8a03a)[0x55846bbfa03a]
[DESKTOP-PM8FS88:01170] [ 9] pimpleFoam(+0x8a305)[0x55846bbfa305]
[DESKTOP-PM8FS88:01170] [10] pimpleFoam(+0x31f00)[0x55846bba1f00]
[DESKTOP-PM8FS88:01170] [11] /lib/x86_64-linux-gnu/libc.so.6(+0x29d90)[0x7f9e4473ad90]
[DESKTOP-PM8FS88:01170] [12] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x80)[0x7f9e4473ae40]
[DESKTOP-PM8FS88:01170] [13] pimpleFoam(+0x34c85)[0x55846bba4c85]
[DESKTOP-PM8FS88:01170] *** End of error message ***
--------------------------------------------------------------------------
Primary job  terminated normally, but 1 process returned
a non-zero exit code. Per user-direction, the job has been aborted.
--------------------------------------------------------------------------
--------------------------------------------------------------------------
mpirun noticed that process rank 10 with PID 0 on node DESKTOP-PM8FS88 exited on signal 8 (Floating point exception).
--------------------------------------------------------------------------
/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     | Website:  https://openfoam.org
    \\  /    A nd           | Version:  10
     \\/     M anipulation  |
\*---------------------------------------------------------------------------*/
Build  : 10-03dd22794e29
Exec   : reconstructPar
Date   : Feb 22 2024
Time   : 20:42:13
Host   : "DESKTOP-PM8FS88"
PID    : 1244
I/O    : uncollated
Case   : /mnt/e/guo/cfd/openfoam
nProcs : 1
sigFpe : Enabling floating point exception trapping (FOAM_SIGFPE).
fileModificationChecking : Monitoring run-time modified files using timeStampMaster (fileModificationSkew 10)
allowSystemOperations : Allowing user-supplied system call operations

中间好像提到了浮点数的问题，这是由于网格质量的原因导致的报错吗？

在使用pimpleFoam进行瞬态仿真时，运行过程中发生如下报错，求大神解答是什么原因造成

--> FOAM Warning :
    From function static Foam::instantList Foam::timeSelector::select0(Foam::Time&, const Foam::argList&)
    in file db/Time/timeSelector.C at line 269
    No time specified or available, selecting 'constant'