[ANSYS Meshing] substract and preserve tool body!!!

fazelriahi · November 10, 2015, 03:41

hi
I wanna subtract the geometry(inducer)from the enclosure(cylinder) and also preserve the inducer for setup part...
but when i subtract and preserve the internal geometry,the ansys meshing can not recognize and mesh all domain including inside of inducer..
and if dont preserve the inducer wont have it in the setup part in cfx..
what do i do??:confused
thanks
geometry-f.png

Antanas · November 12, 2015, 13:42

Quote:

Originally Posted by fazelriahi

hi
I wanna subtract the geometry(inducer)from the enclosure(cylinder) and also preserve the inducer for setup part...
but when i subtract and preserve the internal geometry,the ansys meshing can not recognize and mesh all domain including inside of inducer..
and if dont preserve the inducer wont have it in the setup part in cfx..
what do i do??:confused
thanks
Attachment 43374

So you don't want to mesh inducer but want to import its geometry to CFX-pre? It's impossible because CFX (and other solvers) doesn't work with geometries but with meshes.

fazelriahi · November 12, 2015, 13:51

Quote:

Originally Posted by Antanas

So you don't want to mesh inducer but want to import its geometry to CFX-pre? It's impossible because CFX (and other solvers) doesn't work with geometries but with meshes.

no u maybe dont understand my problem,i want to mesh the fluid domain,in fact among the inducer and cylinder and dont want mesh the inside of inducer because it is not my fluid domain and is solid in real.. i want subtract it...

Gweher · November 13, 2015, 05:18

Well I didn't get it either. If you subtract your inducer from your enclosure then you have your fluid domain. If you mesh the geometry inside AM it will not mesh the inner solid part because you already subtract it when creating your enclosure in DM.

In your case if you preserve the solid part used as "tool" for the boolean subtract operation then it will keep it and it will be meshed inside AM. So if you don't want this you shouldn't preserve the solid tool body.

Antanas · November 13, 2015, 13:28

Quote:

Originally Posted by Gweher

Well I didn't get it either. If you subtract your inducer from your enclosure then you have your fluid domain. If you mesh the geometry inside AM it will not mesh the inner solid part because you already subtract it when creating your enclosure in DM.

In your case if you preserve the solid part used as "tool" for the boolean subtract operation then it will keep it and it will be meshed inside AM. So if you don't want this you shouldn't preserve the solid tool body.

Or supress that body in AM.

November 10, 2015, 03:41	subtract and preserve tool body!!!	#1
fazelriahi New Member fazel Join Date: Nov 2015 Posts: 3 Rep Power: 10	hi I wanna subtract the geometry(inducer)from the enclosure(cylinder) and also preserve the inducer for setup part... but when i subtract and preserve the internal geometry,the ansys meshing can not recognize and mesh all domain including inside of inducer.. and if dont preserve the inducer wont have it in the setup part in cfx.. what do i do??:confused thanks geometry-f.png Last edited by fazelriahi; November 10, 2015 at 15:08.

November 13, 2015, 05:18		#4
Gweher Senior Member Gwenael H. Join Date: Mar 2011 Location: Switzerland Posts: 392 Rep Power: 20	Well I didn't get it either. If you subtract your inducer from your enclosure then you have your fluid domain. If you mesh the geometry inside AM it will not mesh the inner solid part because you already subtract it when creating your enclosure in DM. In your case if you preserve the solid part used as "tool" for the boolean subtract operation then it will keep it and it will be meshed inside AM. So if you don't want this you shouldn't preserve the solid tool body.