关于Ansys三维流体域网格导入openfoam的问题
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请教各位老师和同学们:
一、由于计算的流体域形状比较复杂,所以尝试用Ansys划分流体域网格,在Ansys中对流体域进行分块,对复杂形状部分进行网格加密,并且在复杂部分采用四面体网格进行贴合。最终网格数量在八百万左右。通过转化后形成openfoam的网格,在checkMesh中出现网格报错信息。下面为checkMesh的输出信息。请教老师和同学们这种情况如何去调整网格,或者这种网格会影响计算的收敛性吗?// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // Create time Create polyMesh for time = 0 Time = 0 Mesh stats points: 4200703 internal points: 3796151 faces: 21129446 internal faces: 20649965 cells: 8878252 faces per cell: 4.70581 boundary patches: 10 point zones: 0 face zones: 0 cell zones: 0 Overall number of cells of each type: hexahedra: 2937143 prisms: 28266 wedges: 0 pyramids: 363851 tet wedges: 0 tetrahedra: 5548992 polyhedra: 0 Checking topology... Boundary definition OK. Cell to face addressing OK. Point usage OK. Upper triangular ordering OK. Face vertices OK. Number of regions: 1 (OK). Checking patch topology for multiply connected surfaces... Patch Faces Points Surface topology wall-__-2 102854 103255 ok (non-closed singly connected) wall-__-6 60678 61164 ok (non-closed singly connected) wall-__-3 12304 12645 ok (non-closed singly connected) wall-__-10 46213 46721 ok (non-closed singly connected) wall-__-7 23224 23830 ok (non-closed singly connected) wall-__-8 24985 25355 ok (non-closed singly connected) wall-__-4 10978 11907 ok (non-closed singly connected) wall-__-5 11537 12317 ok (non-closed singly connected) wall-__-__ 38084 38454 ok (non-closed singly connected) wall-__-9 148624 74571 ok (non-closed singly connected) Checking geometry... Overall domain bounding box (-150 -5.7e-14 -5.82643e-12) (277.36 65.8 5.8) Mesh has 3 geometric (non-empty/wedge) directions (1 1 1) Mesh has 3 solution (non-empty) directions (1 1 1) Boundary openness (1.18923e-16 -6.74968e-16 -5.50711e-16) OK. Max cell openness = 1.04585e-15 OK. Max aspect ratio = 262.763 OK. Minimum face area = 2.10595e-05. Maximum face area = 3.10956. Face area magnitudes OK. Min volume = 1.0868e-07. Max volume = 1.19771. Total volume = 93583.6. Cell volumes OK. Mesh non-orthogonality Max: 88.7853 average: 15.3095 *Number of severely non-orthogonal (> 70 degrees) faces: 25145. Non-orthogonality check OK. <<Writing 25145 non-orthogonal faces to set nonOrthoFaces Face pyramids OK. ***Max skewness = 5.26267, 9 highly skew faces detected which may impair the quality of the results <<Writing 9 skew faces to set skewFaces Coupled point location match (average 0) OK. Failed 1 mesh checks. End
二、在Ansys对流体域划分网格的过程中,由于需要局部加密,将流体域分为若干块,但整体网格共点。将该网格导入openfoam并转化后,发现识别出来的每个面为当时分块时每个块的外表面,这种情况无法进行边界条件的设置。请教各位老师和同学,如何在Ansys中,对整体流体域的各个外表面进行标注,可以在导入openfoam后找到标注的面进行边界条件设置。