Question

我正在尝试遵循this tutorial在下面创建轴对称模型：

在对here的讨论之后，我的blockMeshDict文件是：

FoamFile
{
    version     2.0;
    format      ascii;
    class       dictionary;
    object      blockMeshDict;
}

convertToMeters 0.001;

wa 5.0;
cr 10.0;
pr 8.0;
cl 50.0;
px 20.0; 
pl 10.0; 
px2 #calc "$px+$pl"; 
ms 50; 

vertices
(
    (0                      0                         0)    //00
    (#calc "$pr*cos($wa/2)" #calc "$pr*sin($wa/2)"    0)    //01
    (#calc "$pr*cos($wa/2)" #calc "-$pr*sin($wa/2)"   0)    //02
    (#calc "$pr*cos($wa/2)" #calc "-$pr*sin($wa/2)"   $px)  //03
    (#calc "$pr*cos($wa/2)" #calc "$pr*sin($wa/2)"    $px)  //04
    (0                      0                         $px)  //05
    (#calc "$cr*cos($wa/2)" #calc "$cr*sin($wa/2)"    $px)  //06
    (#calc "$cr*cos($wa/2)" #calc "$cr*sin($wa/2)"    0)    //07
    (#calc "$cr*cos($wa/2)" #calc "-$cr*sin($wa/2)"   0)    //08
    (#calc "$cr*cos($wa/2)" #calc "-$cr*sin($wa/2)"   $px)  //09
    (#calc "$cr*cos($wa/2)" #calc "-$cr*sin($wa/2)"   $px2) //10
    (#calc "$cr*cos($wa/2)" #calc "$cr*sin($wa/2)"    $px2) //11
    (#calc "$pr*cos($wa/2)" #calc "$pr*sin($wa/2)"    $px2) //12
    (#calc "$pr*cos($wa/2)" #calc "-$pr*sin($wa/2)"   $px2) //13
    (#calc "$pr*cos($wa/2)" #calc "-$pr*sin($wa/2)"   $cl)  //14
    (#calc "$pr*cos($wa/2)" #calc "$pr*sin($wa/2)"    $cl)  //15
    (#calc "$cr*cos($wa/2)" #calc "$cr*sin($wa/2)"    $cl)  //16
    (#calc "$cr*cos($wa/2)" #calc "-$cr*sin($wa/2)"   $cl)  //17
    (0                      0                         $cl)  //18
    (0                      0                         $px2) //19
);

blocks
(
    hex (0  1  2  0  5  4  3  5)         ($ms 1 $ms) simpleGrading (1 1 1)
    hex (1  7  8  2  4  6  9  3)         ($ms 1 $ms) simpleGrading (1 1 1)
    hex (4  6  9  3  12 11 10 13)        ($ms 1 $ms) simpleGrading (1 1 1)
    hex (12 11 10 13 15 16 17 14)        ($ms 1 $ms) simpleGrading (1 1 1)
    hex (19 12 13 19 18 15 14 18)        ($ms 1 $ms) simpleGrading (1 1 1)
);

edges
(
);

boundary
(
    inlet
    {
        type patch;
        faces
        (
            (0 1 2 0)
            (1 7 8 2)
        );
    }
    outlet
    {
        type patch;
        faces
        (
            (18 15 14 18)
            (15 16 17 14)
        );
    }
    walls
    {
        type wall;
        faces
        (
            (7  8  9  6)
            (6  9  10 11)
            (11 10 17 16)
        );
    }
    wedgeBack
    {
        type wedge;
        faces
        (
            (0  1  4  5)
            (1  7  6  4)
            (4  6  11 12)
            (12 11 16 15)
            (19 12 15 18)
        );
    }

    wedgeFront
    {
        type wedge;
        faces
        (
            (0  2  3  5)
            (2  8  9  3)
            (3  9  10 13)
            (13 10 17 14)
            (19 13 14 18)
        );
    }

    axis
     { 
           type empty;
           faces  
           (
               (0  5  5  0)
               (19 18 18 19)
           );
    }
);

mergePatchPairs
(
);

但是当我运行blockMesh时，会收到如下警告：

创建块网格拓扑 ->泡沫警告：从函数Foam :: polyMesh :: polyMesh（const Foam :: IOobject＆，const Foam :: Xfer>>＆，const cellShapeList＆，const faceListList＆，const wordList＆，const Foam :: PtrList＆，const Foam :: word＆，const Foam :: word＆，bool）在文件meshes / polyMesh / polyMeshFromShapeMesh.C中的第871行在网格中找到3个未定义面；添加到默认补丁。

随后出现错误：

->泡沫致命错误：楔形楔形前中心平面与坐标平面未对齐0.360319 从函数virtual void Foam :: wedgePolyPatch :: calcGeometry（Foam :: PstreamBuffers＆）在文件meshs / polyMesh / polyPatches / constraint / wedge / wedgePolyPatch.C中的第98行。

不幸的是，使用Google搜索错误消息不会返回much。如果您能帮助我知道问题出在哪里以及如何解决，我将不胜感激。

Answer 1

计算点坐标的方式对我来说似乎很奇怪，例如参数wa应该是什么意思？看来您打算将其设为一个角度。

我设法通过将楔形补丁的补丁类型更改为patch类型来获得有效的网格，这比wegde类型更宽容。在对blockMeshDicts进行故障排除时，我经常这样做。

此外，我在入口面片定义中更改了顶点的顺序。补丁程序定义中的顶点列表必须遵循“右手规则”，请参见User Guide。

对于采用轴对称的情况，User Guide建议使用较小的楔角，例如对于轴对称域，为1°。这很可能是您在错误中指出楔形中心平面未对齐的原因。

因此，我建议：

暂时将楔形补丁保持为patch类型
对几何图形进行排序，以便能够生成1°的几何图形切片
在几何图形为1°切片后，将楔形补丁更改回wedge

FoamFile
{
    version     2.0;
    format      ascii;
    class       dictionary;
    object      blockMeshDict;
}

convertToMeters 0.001;

wa 4.0;
cr 10.0;
pr 8.0;
cl 50.0;
px 20.0; 
pl 10.0; 
px2 #calc "$px+$pl"; 
ms 50; 

vertices
(
    (0                      0                         0)    //00
    (#calc "$pr*cos($wa/2)" #calc "$pr*sin($wa/2)"    0)    //01
    (#calc "$pr*cos($wa/2)" #calc "-$pr*sin($wa/2)"   0)    //02
    (#calc "$pr*cos($wa/2)" #calc "-$pr*sin($wa/2)"   $px)  //03
    (#calc "$pr*cos($wa/2)" #calc "$pr*sin($wa/2)"    $px)  //04
    (0                      0                         $px)  //05
    (#calc "$cr*cos($wa/2)" #calc "$cr*sin($wa/2)"    $px)  //06
    (#calc "$cr*cos($wa/2)" #calc "$cr*sin($wa/2)"    0)    //07
    (#calc "$cr*cos($wa/2)" #calc "-$cr*sin($wa/2)"   0)    //08
    (#calc "$cr*cos($wa/2)" #calc "-$cr*sin($wa/2)"   $px)  //09
    (#calc "$cr*cos($wa/2)" #calc "-$cr*sin($wa/2)"   $px2) //10
    (#calc "$cr*cos($wa/2)" #calc "$cr*sin($wa/2)"    $px2) //11
    (#calc "$pr*cos($wa/2)" #calc "$pr*sin($wa/2)"    $px2) //12
    (#calc "$pr*cos($wa/2)" #calc "-$pr*sin($wa/2)"   $px2) //13
    (#calc "$pr*cos($wa/2)" #calc "-$pr*sin($wa/2)"   $cl)  //14
    (#calc "$pr*cos($wa/2)" #calc "$pr*sin($wa/2)"    $cl)  //15
    (#calc "$cr*cos($wa/2)" #calc "$cr*sin($wa/2)"    $cl)  //16
    (#calc "$cr*cos($wa/2)" #calc "-$cr*sin($wa/2)"   $cl)  //17
    (0                      0                         $cl)  //18
    (0                      0                         $px2) //19
);

blocks
(
    hex (0  1  2  0  5  4  3  5)         ($ms 1 $ms) simpleGrading (1 1 1)
    hex (1  7  8  2  4  6  9  3)         ($ms 1 $ms) simpleGrading (1 1 1)
    hex (4  6  9  3  12 11 10 13)        ($ms 1 $ms) simpleGrading (1 1 1)
    hex (12 11 10 13 15 16 17 14)        ($ms 1 $ms) simpleGrading (1 1 1)
    hex (19 12 13 19 18 15 14 18)        ($ms 1 $ms) simpleGrading (1 1 1)
);

edges
(
);

boundary
(
    inlet
    {
        type patch;
        faces
        (
            (0 2 1 0)
            (1 2 8 7)
        );
    }
    outlet
    {
        type patch;
        faces
        (
            (18 15 14 18)
            (15 16 17 14)
        );
    }
    walls
    {
        type wall;
        faces
        (
            (7  8  9  6)
            (6  9  10 11)
            (11 10 17 16)
        );
    }
    wedgeBack
    {
        type patch;
        faces
        (
            (0  1  4  5)
            (1  7  6  4)
            (4  6  11 12)
            (12 11 16 15)
            (19 12 15 18)
        );
    }

    wedgeFront
    {
        type patch;
        faces
        (
            (0  2  3  5)
            (2  8  9  3)
            (3  9  10 13)
            (13 10 17 14)
            (19 13 14 18)
        );
    }

    axis
     { 
           type empty;
           faces  
           (
               (0  5  5  0)
               (19 18 18 19)
           );
    }
);

mergePatchPairs
(
);

轴对称blockMeshDict：泡沫致命错误：楔形...中心平面未与坐标平面对齐

1 个答案: