Order of faces of a cell

ullal · October 12, 2017, 19:35

Dear Foamers

Currently i can access the faces of a cell with mesh.cells()[cellnumber]. This would output the cell along with the faces. But i required to know the order of the faces.

For example mesh.cells()[0] gives 6(0 1 6 10 12 16). Can i somehow recognize which is the front, back, left, right, top, bottom face from this.

Thanks in advance

Best
Ankith

Marpole · October 13, 2017, 01:07

Hello Ankith,

There is no order for the faces. For a mesh cell, front, back, left... don't have meaning. Further, for a cell, it could be polyhedron, where it can have more than 6 faces. There is no way to use front, back...for the cell.

Cell face has function to compute face norm vector, which you may use if direction is important.

ullal · October 13, 2017, 14:17

Thanks Charles for the information.
As i am working on a mesh convertor from OpenFoam to KIVA 4 I required this information.

October 12, 2017, 19:35	Order of faces of a cell	#1
ullal New Member Appu Join Date: Apr 2016 Posts: 15 Rep Power: 9	Dear Foamers Currently i can access the faces of a cell with mesh.cells()[cellnumber]. This would output the cell along with the faces. But i required to know the order of the faces. For example mesh.cells()[0] gives 6(0 1 6 10 12 16). Can i somehow recognize which is the front, back, left, right, top, bottom face from this. Thanks in advance Best Ankith

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October 13, 2017, 01:07		#2
Marpole Senior Member Charles Join Date: Aug 2016 Location: Vancouver, Canada Posts: 148 Rep Power: 9	Hello Ankith, There is no order for the faces. For a mesh cell, front, back, left... don't have meaning. Further, for a cell, it could be polyhedron, where it can have more than 6 faces. There is no way to use front, back...for the cell. Cell face has function to compute face norm vector, which you may use if direction is important.

October 13, 2017, 14:17		#3
ullal New Member Appu Join Date: Apr 2016 Posts: 15 Rep Power: 9	Thanks Charles for the information. As i am working on a mesh convertor from OpenFoam to KIVA 4 I required this information.