[GAMBIT] Export to FLUENT

tsero · September 19, 2011, 05:27

Hello,

I am trying to export a 3-D Mesh with FLUENT 5/6 as solver and i am getting the messasge : "Face # has higher order elements and cannot be exported to fluent 5 format."

I am using tri elements and the Grid design is a conical pipe. I experimented with other kinds of elements but errors having to do with how the elements fit to the surface appear.

Can it be that the FLUENT 5/6 is not able to solve 3-D mesh elements?

PSYMN · September 20, 2011, 13:57

Is it complaining about 3D elements or quadratic (2nd order) elements?

Probably the later. Fluent is a "linear" element solver, so you must make sure that you are dealing with tetra-4 and tri-3 type elements, not tetra-12 or tri-6.

Other solvers (usually FEA solvers such as ANSYS Mechanical) prefer 2nd order elements for increased accuracy, but can usually work with both.

-mAx- · September 28, 2011, 02:39

http://www.cfd-online.com/Forums/ans...ace-error.html

September 19, 2011, 05:27	Export to FLUENT	#1
tsero New Member Join Date: Sep 2011 Posts: 8 Rep Power: 15	Hello, I am trying to export a 3-D Mesh with FLUENT 5/6 as solver and i am getting the messasge : "Face # has higher order elements and cannot be exported to fluent 5 format." I am using tri elements and the Grid design is a conical pipe. I experimented with other kinds of elements but errors having to do with how the elements fit to the surface appear. Can it be that the FLUENT 5/6 is not able to solve 3-D mesh elements?

September 20, 2011, 13:57		#2
PSYMN Senior Member Simon Pereira Join Date: Mar 2009 Location: Ann Arbor, MI Posts: 2,663 Blog Entries: 1 Rep Power: 47	Is it complaining about 3D elements or quadratic (2nd order) elements? Probably the later. Fluent is a "linear" element solver, so you must make sure that you are dealing with tetra-4 and tri-3 type elements, not tetra-12 or tri-6. Other solvers (usually FEA solvers such as ANSYS Mechanical) prefer 2nd order elements for increased accuracy, but can usually work with both. __________________ ----------------------------------------- Please help guide development at ANSYS by filling in these surveys Public ANSYS ICEM CFD Users Survey This second one is more general (Gambit, TGrid and ANSYS Meshing users welcome)... CFD Online Users Survey

September 28, 2011, 02:39		#3
-mAx- Super Moderator Maxime Perelli Join Date: Mar 2009 Location: Switzerland Posts: 3,297 Rep Power: 41	http://www.cfd-online.com/Forums/ans...ace-error.html __________________ In memory of my friend Hervé: CFD engineer & freerider

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