# simpleFoam for complicated geometry, non-orthogonal mesh, omega wall function

 Register Blogs Members List Search Today's Posts Mark Forums Read

 July 27, 2012, 06:00 simpleFoam for complicated geometry, non-orthogonal mesh, omega wall function #1 Member   achinta Join Date: May 2010 Location: Sydney Posts: 66 Rep Power: 8 Hello everyone, I am using simpleFoam on complicated geometry (non orthogonal mesh). Here is the checkMesh report: -------------- Mesh stats points: 6487723 faces: 19200050 internal faces: 18938278 cells: 6356388 boundary patches: 16 point zones: 0 face zones: 0 cell zones: 0 Overall number of cells of each type: hexahedra: 6356388 prisms: 0 wedges: 0 pyramids: 0 tet wedges: 0 tetrahedra: 0 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). . . Mesh (non-empty, non-wedge) directions (1 1 1) Mesh (non-empty) directions (1 1 1) Boundary openness (9.64958e-17 2.34786e-15 -6.13025e-16) OK. Max cell openness = 4.58304e-15 OK. Max aspect ratio = 299.485 OK. Minumum face area = 3.41806e-11. Maximum face area = 0.000249108. Face area magnitudes OK. Min volume = 1.22828e-14. Max volume = 4.16394e-07. Total volume = 0.20005. Cell volumes OK. Mesh non-orthogonality Max: 87.0638 average: 19.2898 *Number of severely non-orthogonal faces: 18931. Non-orthogonality check OK. <

 October 20, 2013, 09:22 how did u determine k and omega for complicated geometry #2 Senior Member     Hasan K.J. Join Date: Dec 2011 Location: Bristol, United Kingdom Posts: 196 Rep Power: 6 Hey achinta, I am stuck with similar problem but I'm a one step before u How did u determine the K and Omega for the complicated geometry, and did u over come the problem ? i am having the same problem Regards, Hasan.

October 25, 2013, 00:58
k and omega
#3
Member

B T KANNAN
Join Date: Jul 2011
Posts: 54
Rep Power: 7
Quote:
 Originally Posted by Alhasan Hey achinta, I am stuck with similar problem but I'm a one step before u How did u determine the K and Omega for the complicated geometry, and did u over come the problem ? i am having the same problem Regards, Hasan.
Dear Hasan,
Try to calculate k and epsilon from the intensity and velocity, which you know for inlet. If not, get it from experiments(available in literature). Then calculate omega by omega=epsilon/k
--
KANNAN

 Thread Tools Display Modes Linear Mode

 Posting Rules You may not post new threads You may not post replies You may not post attachments You may not edit your posts BB code is On Smilies are On [IMG] code is On HTML code is OffTrackbacks are On Pingbacks are On Refbacks are On Forum Rules

 Similar Threads Thread Thread Starter Forum Replies Last Post DarrenC ANSYS Meshing & Geometry 11 August 5, 2013 06:42 hsingtzu OpenFOAM Native Meshers: blockMesh 2 March 14, 2012 10:56 Chrisi1984 OpenFOAM Installation 0 December 31, 2010 07:42 zandi CFX 8 January 23, 2010 05:16 skabilan OpenFOAM Installation 3 July 28, 2009 00:35

All times are GMT -4. The time now is 07:40.