[ANSYS Meshing] 3D flat plate meshing with ICEM CFD

Jun_Milan · January 16, 2014, 23:55

Hello everyone,

I'm very new to the subject of meshing ... I need to mesh a 3D flat plate in ICEM CFD to do some simulations for a university project !

A friend helped me with the meshing of a 2D plate. After that, I think I must extrude the geometry to 3D in the z direction and then convert my 2D mesh to 3D. I searched on the net but I didn't find any interesting article or tutorial about this.

Can anyone help me please?
If anyone know an article or a website where it is explained step by step how to mesh a 3D flat plate, it will be very helpful for me.

Thank you very much,

Jun_Milan

kad · January 17, 2014, 07:47

If your 2D mesh is fine you can extrude it in z-direction. You do not need to extrude the geometry. Mesh extrusion is part of the method I have talked about in this thread http://www.cfd-online.com/Forums/ans...787-prism.html. You only need to define one additional extrusion curve for this. Also take a look at the ICEM help.

Jun_Milan · January 18, 2014, 10:07

Hello Kad,

I'm having some problems following your method in the prism thread ... I don't know from where to start because my geometry is different from that of the post ...

I have a 2D flat plate given in the xy plane. Its length in the x direction is 0.03 m and contains 51 nodes; while in the y direction, its 0.02 m with 111 nodes. Precisely, I would like to extrude the mesh in the z direction to have 0.01 m length and 21 nodes defined.

Thank you very much,
Jun_Milan

kad · January 18, 2014, 12:11

All you have to do is one extrude. The function is pretty self explanatory and is well documented in the manual.

For a fixed spacing in z-direction I would use extrude by vector. Otherwise you can create a curve with direction (0 0 1) and length 0.01. Apply mesh curve on it and you can extrude the mesh by curve. There is no need to extrude the geometry, you do not even have to load it at all.

Finally you have to create parts for the mesh boundaries e.g. inlet, wall, ... and put the corresponding mesh in them. Also run check mesh because the extrusion can create duplicate elements.

Btw. there is also a way to extrude the blocking itself, but I think you have to change geometry for this. It is used in this tutorial: http://www.youtube.com/watch?v=KabKFrJK3fM .

Jun_Milan · January 20, 2014, 16:25

Thank you Kad. The method of extruding directly the mesh worked well.

And this is a good article I've found it on the net, where they show us step by step how to mesh a 3D duct (or flat plate) ...
http://home.cc.umanitoba.ca/~engsjo/...duct-v1p01.pdf

Jun_Milan

January 16, 2014, 23:55	3D flat plate meshing with ICEM CFD	#1
Jun_Milan New Member Jun Milan Join Date: Jul 2013 Location: Montreal Posts: 13 Rep Power: 13	Hello everyone, I'm very new to the subject of meshing ... I need to mesh a 3D flat plate in ICEM CFD to do some simulations for a university project ! A friend helped me with the meshing of a 2D plate. After that, I think I must extrude the geometry to 3D in the z direction and then convert my 2D mesh to 3D. I searched on the net but I didn't find any interesting article or tutorial about this. Can anyone help me please? If anyone know an article or a website where it is explained step by step how to mesh a 3D flat plate, it will be very helpful for me. Thank you very much, Jun_Milan

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January 17, 2014, 07:47		#2
kad Senior Member Join Date: Feb 2013 Location: Germany Posts: 200 Rep Power: 24	If your 2D mesh is fine you can extrude it in z-direction. You do not need to extrude the geometry. Mesh extrusion is part of the method I have talked about in this thread http://www.cfd-online.com/Forums/ans...787-prism.html. You only need to define one additional extrusion curve for this. Also take a look at the ICEM help.

January 18, 2014, 12:11		#4
kad Senior Member Join Date: Feb 2013 Location: Germany Posts: 200 Rep Power: 24	All you have to do is one extrude. The function is pretty self explanatory and is well documented in the manual. For a fixed spacing in z-direction I would use extrude by vector. Otherwise you can create a curve with direction (0 0 1) and length 0.01. Apply mesh curve on it and you can extrude the mesh by curve. There is no need to extrude the geometry, you do not even have to load it at all. Finally you have to create parts for the mesh boundaries e.g. inlet, wall, ... and put the corresponding mesh in them. Also run check mesh because the extrusion can create duplicate elements. Btw. there is also a way to extrude the blocking itself, but I think you have to change geometry for this. It is used in this tutorial: http://www.youtube.com/watch?v=KabKFrJK3fM .

January 20, 2014, 16:25		#5
Jun_Milan New Member Jun Milan Join Date: Jul 2013 Location: Montreal Posts: 13 Rep Power: 13	Thank you Kad. The method of extruding directly the mesh worked well. And this is a good article I've found it on the net, where they show us step by step how to mesh a 3D duct (or flat plate) ... http://home.cc.umanitoba.ca/~engsjo/...duct-v1p01.pdf Jun_Milan