一个简单的速度压力非迭代求解器

[李东岳]

之前OKSS2课程的一部分：自定义求解器。在icoFoam中替换下述即可：

    while (runTime.loop())
    {
        Info<< "Time = " << runTime.timeName() << nl << endl;
        #include "CourantNo.H"
        solve(fvm::ddt(U) + fvc::div(phi,U));
        U.oldTime() = U;
        solve(fvm::ddt(U) - fvm::laplacian(nu, U));
        phi = linearInterpolate(U) & mesh.Sf();

        solve(fvm::laplacian(runTime.deltaT(), p) == fvc::div(phi));

        U -= runTime.deltaT()*fvc::grad(p);
        phi = linearInterpolate(U) & mesh.Sf();

        runTime.write();
        Info<< "ExecutionTime = " << runTime.elapsedCpuTime() << " s"
            << "  ClockTime = " << runTime.elapsedClockTime() << " s"
            << nl << endl;
    }

[Samuel-Tu]

这是什么原理啊，有没有资料参考下。

[李东岳]

参考Hirsch 2007: 12.4.1 Basic Approach of Pressure Correction Methods