# Mesh Quality

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 August 22, 2011, 19:55 Mesh Quality #1 Senior Member   Mohsin Mukhtar Join Date: Mar 2010 Location: South Korea Posts: 249 Rep Power: 9 Hello For a good quality tetrahedral volume mesh on a cylinder, is it compulsory to mesh the outer faces of the volume as Tri-Pave? or is it fine to mesh the faces with Quad-pave..Please expalin Thank you

 August 23, 2011, 01:46 #2 Super Moderator     Maxime Perelli Join Date: Mar 2009 Location: Switzerland Posts: 3,149 Rep Power: 32 for a cylinder, I think you can afford to mesh it with hexa (cooper). Mesh one cap surface first (with pave) __________________ In memory of my friend Hervé: CFD engineer & freerider

 August 23, 2011, 02:06 #3 Member   Join Date: Mar 2009 Posts: 85 Rep Power: 9 Hi, If you would like to fill the cylinder with tetrahedral you have another option. You can mesh surfaces with quads then create one set of pyramids and then fill with tets. Hope this helps

August 23, 2011, 02:25
#4
Senior Member

Mohsin Mukhtar
Join Date: Mar 2010
Location: South Korea
Posts: 249
Rep Power: 9

Well, the following picture shows the geometry. It's hard to mesh it via hexahedral scheme hence i would like to mesh it via tetrahedral scheme but the quality of the mesh is very low via tetrahedral. Could you explain how can i approach this problem.

Thanks
Attached Images
 Question1.jpg (73.1 KB, 10 views)

 August 23, 2011, 02:32 #5 Super Moderator     Maxime Perelli Join Date: Mar 2009 Location: Switzerland Posts: 3,149 Rep Power: 32 Sans titre.jpg Sans titre1.jpg *Mesh cylinder first (one cap with quad). *Then split the block, like I did for instance. *Mesh the yellow volume with cooper (mesh source face in front of you) *Then mesh the orange and pink volumes. Source faces are the one on the top of volume Mohsin likes this. __________________ In memory of my friend Hervé: CFD engineer & freerider

 August 23, 2011, 07:04 #6 Senior Member   Mohsin Mukhtar Join Date: Mar 2010 Location: South Korea Posts: 249 Rep Power: 9 just wanted to know, how did u split this volume? You first made vertices, then arcs and then from arcs u made face and split?

August 23, 2011, 07:09
#7
Super Moderator

Maxime Perelli
Join Date: Mar 2009
Location: Switzerland
Posts: 3,149
Rep Power: 32
Quote:
 Originally Posted by Mohsin just wanted to know, how did u split this volume? You first made vertices, then arcs and then from arcs u made face and split?
Exactly
__________________
In memory of my friend Hervé: CFD engineer & freerider

 August 24, 2011, 01:43 #8 Senior Member   Mohsin Mukhtar Join Date: Mar 2010 Location: South Korea Posts: 249 Rep Power: 9 The split operation as u mentioned, gives an error. Can u tell me the reason why is it doing like this? I created another thread: http://www.cfd-online.com/Forums/fluent/91823-volume-split-face.html#post321285 Please reply

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