[ICEM] Icem cfd

navaneeaero · September 6, 2018, 04:00

Hi

Can anyone give idea about Split wall in icem cfd? When we can use that option? Please explain with an example.

Thanks in advance

Gert-Jan · September 6, 2018, 05:33

Image you have a volume with somewhere a wall in the middle. Why not a room with a flat wall like a table desk. You can create a model of this room in ICEM with this table desk as a thin wall with no thickness. Like a sheet-metal.

When meshing, you can treat this sheet in different ways:
- internal wall
- split wall

In my experience, when using internal wall, the mesh on both sides of this wall will be equal. In fact the mesh will be conformal.
When using split wall, the mesh on both sides will not be equal. So not conformal.

The consequence is that when I import the mesh in CFX-Pre, a split wall, will be seen as a wall. When using an internal wall, I can choose between wall, or nothing. In the latter case, CFX doesn't see the wall, and the room is empty.

So, the internal wall gives me more flexibility. I can use a single mesh for different runs by applying 'wall conditions' or 'nothing' on the internal walls. Therefore I always use internal walls...

September 6, 2018, 04:00	Icem cfd	#1
navaneeaero New Member Navaneetha Kannan Join Date: Dec 2014 Location: Coimbatore Posts: 5 Rep Power: 11	Hi Can anyone give idea about Split wall in icem cfd? When we can use that option? Please explain with an example. Thanks in advance

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September 6, 2018, 05:33		#2
Gert-Jan Senior Member Gert-Jan Join Date: Oct 2012 Location: Europe Posts: 1,827 Rep Power: 27	Image you have a volume with somewhere a wall in the middle. Why not a room with a flat wall like a table desk. You can create a model of this room in ICEM with this table desk as a thin wall with no thickness. Like a sheet-metal. When meshing, you can treat this sheet in different ways: - internal wall - split wall In my experience, when using internal wall, the mesh on both sides of this wall will be equal. In fact the mesh will be conformal. When using split wall, the mesh on both sides will not be equal. So not conformal. The consequence is that when I import the mesh in CFX-Pre, a split wall, will be seen as a wall. When using an internal wall, I can choose between wall, or nothing. In the latter case, CFX doesn't see the wall, and the room is empty. So, the internal wall gives me more flexibility. I can use a single mesh for different runs by applying 'wall conditions' or 'nothing' on the internal walls. Therefore I always use internal walls...