Dynamic mesh element types

Jonny6001 · February 27, 2010, 11:00

Hi, is there any guide or the like which recommends the type of mesh elements zones should have in a dynamic mesh simulation?

I am going to do a 3d dynamic mesh of engine in-cylinder, I have the 2d tutorial and have looked at the mesh construction.

I take it any actual moving grid zones have to be quad elements.

Any help would be greatly appreciated.

Thanks

-mAx- · March 1, 2010, 01:03

There is no recommendations, but I would use layering technic, so you can work with hexas or wedges where extrusion's direction is the same as your cylinder's axis. (you mentionned 3d-mesh, and quad are 2d-elements)

Jonny6001 · March 1, 2010, 16:35

Hello, thanks for your reply.
Sorry I means hex for 3d and quad for 2d, I am not sure whether to go for a 3d simulation now or try and get combustion working nicely on a 2d simulation.

Do you have any expericence with combustion within CFD?

Thanks a lot.

-mAx- · March 2, 2010, 01:05

If your model enables it, start with 2d calculation.
No experience with combustion

February 27, 2010, 11:00	Dynamic mesh element types	#1
Jonny6001 Member Jonny Join Date: Aug 2009 Posts: 72 Rep Power: 16	Hi, is there any guide or the like which recommends the type of mesh elements zones should have in a dynamic mesh simulation? I am going to do a 3d dynamic mesh of engine in-cylinder, I have the 2d tutorial and have looked at the mesh construction. I take it any actual moving grid zones have to be quad elements. Any help would be greatly appreciated. Thanks

March 1, 2010, 01:03		#2
-mAx- Super Moderator Maxime Perelli Join Date: Mar 2009 Location: Switzerland Posts: 3,297 Rep Power: 41	There is no recommendations, but I would use layering technic, so you can work with hexas or wedges where extrusion's direction is the same as your cylinder's axis. (you mentionned 3d-mesh, and quad are 2d-elements) __________________ In memory of my friend Hervé: CFD engineer & freerider

March 2, 2010, 01:05		#4
-mAx- Super Moderator Maxime Perelli Join Date: Mar 2009 Location: Switzerland Posts: 3,297 Rep Power: 41	If your model enables it, start with 2d calculation. No experience with combustion __________________ In memory of my friend Hervé: CFD engineer & freerider

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March 1, 2010, 16:35		#3
Jonny6001 Member Jonny Join Date: Aug 2009 Posts: 72 Rep Power: 16	Hello, thanks for your reply. Sorry I means hex for 3d and quad for 2d, I am not sure whether to go for a 3d simulation now or try and get combustion working nicely on a 2d simulation. Do you have any expericence with combustion within CFD? Thanks a lot.