Volume mesh / Sub-volume

GiuMan · September 3, 2014, 15:53

Morning every one.
I'm a new user of ANSA: I should like to generate a volume mesh (with boundary layer) around a car and then divide it in several sub-volumes.
This could give me the possibilities, if I change a little part of the car (for example I add a flick) to regenerate only a little part of boundary and volume mesh reducing, dramatically, the mesh generation time.

Thank's.

vangelis · September 3, 2014, 17:50

Hi there

I suggest you practice with tutorial external aero.
Once you complete it, start again from the clean watertight geometry but this time use the function Faces Plane Cut to split the domain in two and create an interior Face.
Then separate the pids of the car that are cut by this face.
Grow the layers, ensuring that you create them simultaneously
but with two separate PIDs per subvolume, so that they become
two independent volumes. Then detect the two remaining volumes
and tet mesh them. In the end you should have 4 volumes (2 layers and 2 tet). You can delete a pair of layer and tet, change the geometry, remesh and recreate the volume mesh

Hope this helps

Vangelis

September 3, 2014, 15:53	Volume mesh / Sub-volume	#1
GiuMan New Member Join Date: Sep 2014 Posts: 10 Rep Power: 12	Morning every one. I'm a new user of ANSA: I should like to generate a volume mesh (with boundary layer) around a car and then divide it in several sub-volumes. This could give me the possibilities, if I change a little part of the car (for example I add a flick) to regenerate only a little part of boundary and volume mesh reducing, dramatically, the mesh generation time. Thank's.

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September 3, 2014, 17:50		#2
vangelis Senior Member Vangelis Skaperdas Join Date: Mar 2009 Location: Thessaloniki, Greece Posts: 287 Rep Power: 21	Hi there I suggest you practice with tutorial external aero. Once you complete it, start again from the clean watertight geometry but this time use the function Faces Plane Cut to split the domain in two and create an interior Face. Then separate the pids of the car that are cut by this face. Grow the layers, ensuring that you create them simultaneously but with two separate PIDs per subvolume, so that they become two independent volumes. Then detect the two remaining volumes and tet mesh them. In the end you should have 4 volumes (2 layers and 2 tet). You can delete a pair of layer and tet, change the geometry, remesh and recreate the volume mesh Hope this helps Vangelis