rayleigh taylor不稳定性流动cfd分析代码
时间: 2024-06-09 19:05:39 浏览: 14
Rayleigh-Taylor不稳定性是由两个流体的密度不同而引起的一种流体不稳定性。CFD分析可以用来模拟和预测这种流体不稳定性。以下是一个简单的Rayleigh-Taylor不稳定性流动的CFD分析代码示例,使用OpenFOAM软件:
```
/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 2.3.0 |
| \\ / A nd | Web: www.OpenFOAM.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class dictionary;
location "system";
object controlDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
application interFoam;
startFrom startTime;
startTime 0;
stopAt endTime;
endTime 20;
deltaT 0.001;
writeControl timeStep;
writeInterval 1;
purgeWrite 0;
writeFormat ascii;
writePrecision 6;
writeCompression off;
timeFormat general;
timePrecision 6;
runTimeModifiable true;
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
functions
{
#includeFunc "waveProperties"
#includeFunc "atmosphere"
#includeFunc "forces"
#includeFunc "cellVolumes"
#includeFunc "wallShearStress"
#includeFunc "vorticity"
#includeFunc "kineticEnergy"
#includeFunc "enstrophy"
#includeFunc "energy"
#includeFunc "internalEnergy"
#includeFunc "heatTransfer"
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
libs ("libOpenFOAM.so");
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
dict
{
simulationType interFoam;
// g constant of gravity
physicalConstants
{
value uniform 0 -9.81 0;
}
// Fluid properties
rho1 998.2;
rho2 1.205;
mu1 1.0e-3;
mu2 1.5e-5;
sigma 0.0728;
// Time settings
endTime endTime;
deltaT deltaT;
// Initial and boundary conditions
initDict
{
#include "initDict"
}
U
{
type slip;
}
p
{
type zeroGradient;
}
alpha1
{
type fixedValue;
value uniform 0;
}
rho
{
type compressible::densityIncompressibleMixture;
mixture true;
transport false;
rhoName rho2;
rho1 rho1;
rho2 rho2;
betaName none;
beta 0;
}
rhoU
{
type compressible::momentumIncompressibleMixture;
mixture true;
transport false;
rhoName rho2;
rho1 rho1;
rho2 rho2;
betaName none;
beta 0;
}
rhoE
{
type compressible::energyIncompressibleMixture;
mixture true;
transport false;
rhoName rho2;
rho1 rho1;
rho2 rho2;
betaName none;
beta 0;
}
// Numerical schemes
fvSchemes
{
#include "fvSchemes"
}
// Solution algorithms
fvSolution
{
#include "fvSolution"
}
// Time stepping control
timeControl
{
#include "timeControl"
}
// Parallelism
decompositionMethod scotch;
nProcsSimple 4;
nProcs 4;
}
```
需要注意的是,这只是一个基本的代码框架,其中需要包含初始化、网格、求解器等详细设置和参数。具体的设置和参数需要根据实际情况进行调整和修改。