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没问题呀，可以参考applications/test/mesh/Test-mesh.C文件

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#include "argList.H"
#include "fvMesh.H"
#include "volFields.H"
#include "surfaceFields.H"

using namespace Foam;

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
// Main program:

int main(int argc, char *argv[])
{

    #include "setRootCase.H"
    #include "createTime.H"

    Info<< "Create mesh, no clear-out\n" << endl;
    fvMesh mesh
    (
        IOobject
        (
            fvMesh::defaultRegion,
            runTime.timeName(),
            runTime,
            IOobject::MUST_READ
        )
    );

    Info<< mesh.C() << endl;
    Info<< mesh.V() << endl;

    surfaceVectorField Cf = mesh.Cf();

    Info<< Cf << endl;

    // Test construct from cellShapes
    {
        pointField points(mesh.points());
        cellShapeList shapes(mesh.cellShapes());

        const polyBoundaryMesh& pbm = mesh.boundaryMesh();

        faceListList boundaryFaces(pbm.size());
        forAll(pbm, patchi)
        {
            boundaryFaces[patchi] = pbm[patchi];
        }
        wordList boundaryPatchNames(pbm.names());
        PtrList<dictionary> boundaryDicts(pbm.size());
        forAll(pbm, patchi)
        {
            OStringStream os;
            os << pbm[patchi];
            IStringStream is(os.str());
            boundaryDicts.set(patchi, new dictionary(is));
        }

        word defaultBoundaryPatchName = "defaultFaces";
        word defaultBoundaryPatchType = emptyPolyPatch::typeName;

        fvMesh newMesh
        (
            IOobject
            (
                "newMesh",
                runTime.timeName(),
                runTime,
                Foam::IOobject::NO_READ
            ),
            Xfer<pointField>(points),
            shapes,
            boundaryFaces,
            boundaryPatchNames,
            boundaryDicts,
            defaultBoundaryPatchName,
            defaultBoundaryPatchType
        );

        Info<< newMesh.C() << endl;
        Info<< newMesh.V() << endl;

        surfaceVectorField Cf = newMesh.Cf();

        Info<< Cf << endl;
    }


    Info<< "End\n" << endl;

    return 0;
}


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

@DY大世界

@DY大世界 运行snappyHexMesh命令时，后面添加 -overwrite

问题已经解决了，还是发过来，便于其它人有类似问题的参考。异常时显卡驱动采用的是通用的驱动，在software&updates程序中将其切换为navidia过后便好了。

不知道为什么，本次安装完paraview后，打开算例的化没法用透明度了,opacity设置为1时，图就直接不显示了，但也不报错误。是不是哪里设置不对？望各位指点，谢谢～