Benefits of Mapped Face Meshing?

federernadal · June 19, 2016, 19:00

I don't fully understand what exactly it does. I mean,it definitely adds structure and unformity to the face, but looking at mesh statistics it doesn't do anything to the skewness/quality. What exactly does mapped face meshing do?

ghorrocks · June 19, 2016, 20:07

Mapped face meshing maps a structured mesh to the face. That is pretty obvious.

But I think your question is more why would you do this? Mapped face meshing is useful when the face is approximately rectangular, so a simple structured mesh will cover it with a very ordered and high quality mesh. The mesh it produces in this case is usually better than can be produced by other techniques. But if the face is not approximately rectangular it can produce some terrible meshes. So it is a meshing option which helps for some cases but not all - hence it is an option available if the user chooses it.

federernadal · June 20, 2016, 14:29

But why dont any of the metrics change before and after the mapped face mesh (skewness, element quality, etc)?

ghorrocks · June 20, 2016, 20:50

The really annoying thing about ansys meshing is that you can put things like mapped face meshing into the meshing tree, but if it does not like it then it ignores it and proceeds without a mapped face mesh.

So are you sure it actually generated a mapped face mesh?

June 19, 2016, 19:00	Benefits of Mapped Face Meshing?	#1
federernadal Member Join Date: Oct 2015 Posts: 56 Rep Power: 10	I don't fully understand what exactly it does. I mean,it definitely adds structure and unformity to the face, but looking at mesh statistics it doesn't do anything to the skewness/quality. What exactly does mapped face meshing do?

June 20, 2016, 20:50		#4
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,700 Rep Power: 143	The really annoying thing about ansys meshing is that you can put things like mapped face meshing into the meshing tree, but if it does not like it then it ignores it and proceeds without a mapped face mesh. So are you sure it actually generated a mapped face mesh? Mazze[ITA] likes this.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
[ANSYS Meshing] Inflation in Mapped Face Meshing	gill11a	ANSYS Meshing & Geometry	13	August 28, 2022 12:26
[Gmsh] Vertex numbering is dense	KateEisenhower	OpenFOAM Meshing & Mesh Conversion	7	August 3, 2015 10:49
[ICEM] how to define periodic for free type face in hexa meshing	mingersai	ANSYS Meshing & Geometry	0	February 5, 2012 01:55
Singularity of grid?Volume meshing vs face meshing	Ken	Main CFD Forum	0	September 4, 2003 11:09
Volume Meshing & Face Meshing? singularity of grid	ken	FLUENT	0	September 4, 2003 11:08

June 19, 2016, 20:07		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,700 Rep Power: 143	Mapped face meshing maps a structured mesh to the face. That is pretty obvious. But I think your question is more why would you do this? Mapped face meshing is useful when the face is approximately rectangular, so a simple structured mesh will cover it with a very ordered and high quality mesh. The mesh it produces in this case is usually better than can be produced by other techniques. But if the face is not approximately rectangular it can produce some terrible meshes. So it is a meshing option which helps for some cases but not all - hence it is an option available if the user chooses it.

June 20, 2016, 14:29		#3
federernadal Member Join Date: Oct 2015 Posts: 56 Rep Power: 10	But why dont any of the metrics change before and after the mapped face mesh (skewness, element quality, etc)?