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September 27, 2013, 12:40 |
Problem with rotating tools
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#1 |
Member
Join Date: Nov 2012
Posts: 62
Rep Power: 13 |
Dear all,
My problem is quite strange in nature. I have been using pointwise v 16R3 for the last couple of months. Pointwise has released a new version "version 17". My lab has recently acquired the license of the newest release. Now comes the problem. I am currently using a half cylindrical computational domain containing one single blade. After meshing this half cylinder, I rotate the whole computational domain and create a two bladed turbine. I am attaching a picture of the computational domain. In pointwise I keep the solver Ansysfluent. I convert my mesh to a .cas file. Then I copy that .cas file to my linux machine and transfer it to OpenFOAM/polyMesh. Now here comes the problem. After converting the mesh into OpenFOAM I normally use checkMesh utility of OpenFOAM and the result is just crazy. I have been using the same procedure in pointwise v16 R3. It did not show any problem. I am copying the error message below: *---------------------------------------------------------------------------*\ | ========= | | | \\ / F ield | OpenFOAM: The Open Source CFD Toolbox | | \\ / O peration | Version: 2.1.0 | | \\ / A nd | Web: www.OpenFOAM.org | | \\/ M anipulation | | \*---------------------------------------------------------------------------*/ Build : 2.1.0-bd7367f93311 Exec : checkMesh Date : Sep 28 2013 Time : 01:22:31 Host : "hpc001" PID : 19116 Case : /home/abdullah/Hope/inner nProcs : 1 sigFpe : Enabling floating point exception trapping (FOAM_SIGFPE). fileModificationChecking : Monitoring run-time modified files using timeStampMaster allowSystemOperations : Disallowing user-supplied system call operations // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // Create time Create polyMesh for time = 0 Time = 0 Mesh stats points: 329250 faces: 2326423 internal faces: 2296159 cells: 1058394 boundary patches: 3 point zones: 0 face zones: 0 cell zones: 0 Overall number of cells of each type: hexahedra: 108040 prisms: 154360 wedges: 0 pyramids: 18566 tet wedges: 0 tetrahedra: 777428 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 Rotor 3736 1968 ok (non-closed singly connected) Rotor-AMI 5008 2602 ok (non-closed singly connected) blade-2 21520 13806 ok (closed singly connected) Checking geometry... Overall domain bounding box (-0.7 -0.700014 -0.2) (0.7 0.700014 0.7) Mesh (non-empty, non-wedge) directions (1 1 1) Mesh (non-empty) directions (1 1 1) Boundary openness (-5.97487e-18 9.05469e-17 -1.52007e-16) OK. ***High aspect ratio cells found, Max aspect ratio: 1.35622e+294, number of cells 36 <<Writing 36 cells with high aspect ratio to set highAspectRatioCells Minumum face area = 4.81265e-14. Maximum face area = 0.00279988. Face area magnitudes OK. Min volume = 1.66667e-300. Max volume = 4.86646e-05. Total volume = 1.3839. Cell volumes OK. Mesh non-orthogonality Max: 111.714 average: 20.6478 *Number of severely non-orthogonal faces: 18175. ***Number of non-orthogonality errors: 432. <<Writing 18607 non-orthogonal faces to set nonOrthoFaces ***Error in face pyramids: 191 faces are incorrectly oriented. <<Writing 191 faces with incorrect orientation to set wrongOrientedFaces ***Max skewness = 11.0435, 94 highly skew faces detected which may impair the quality of the results <<Writing 94 skew faces to set skewFaces Coupled point location match (average 0) OK. Failed 4 mesh checks. End I am attaching the full cylindrical computational domain which is giving me error in OpenFOAM: Capture.jpg It was gained from this half cylindrical rotation: Capture1.jpg I am really out of clue. I would appreciate any help
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