[ANSYS Meshing] Ansys mesh generates only surface mesh but not volume

Aarib · May 5, 2021, 04:27

I am trying to mesh a 3D HEPA Filter geometry. The Ansys mesh only creates mesh on the surfaces but not in the interior of the body. The inside of the body has no mesh at all. Can someone tell me how to solve this problem? Thank you.
Picture is also attached.
https://drive.google.com/file/d/1MtY...ew?usp=sharing
[IMG]

[/IMG]

kjetil · May 11, 2021, 08:22

Do you have an interior "body" as a solid also? Does this get a check mark when you mesh the entire geometry, to indicate that mesh is finished?

Aarib · May 11, 2021, 09:08

I get the green check mark after mesh is completed but there is no solid body inside it.

kjetil · May 11, 2021, 09:12

Then I guess you must create it prior to meshing?

Aarib · May 11, 2021, 10:17

But i want air to flow inside the body from the empty parts. She is a complicated body so i can't create a solid body inside.

kjetil · May 11, 2021, 10:31

Are you combining solid, porous and fluid domains? In that case you need "solids" for all of them, and they're then defined differently in CFX/Fluent after meshing.

Aarib · May 11, 2021, 10:36

So i can't make the air flow inside if i don't have a solid body inside?

kjetil · May 11, 2021, 10:38

Air will flow in their own "fluid domains". Nothing at all will happen in empty spaces. This is very different from when looking at a geometry in a 3D modelling software.

Aarib · May 11, 2021, 10:45

Then is there a way to fill the geometry? It's a complicated Geiger and it can't be filled with simple fill command in design modeler

kjetil · May 11, 2021, 10:57

This depends on the software. "Volume extract" is one common term. Another way is to use a boolean to subtract a dummy volume from the physical object. Keep in mind that channels and gaps also have to be included, if appropriate.

May 5, 2021, 04:27	Ansys mesh generates only surface mesh but not volume	#1
Aarib New Member Aarib Irfan Join Date: Mar 2020 Posts: 18 Rep Power: 6	I am trying to mesh a 3D HEPA Filter geometry. The Ansys mesh only creates mesh on the surfaces but not in the interior of the body. The inside of the body has no mesh at all. Can someone tell me how to solve this problem? Thank you. Picture is also attached. https://drive.google.com/file/d/1MtY...ew?usp=sharing [IMG][/IMG]

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May 11, 2021, 08:22		#2
kjetil Senior Member Join Date: Mar 2009 Location: Norway Posts: 138 Rep Power: 17	Do you have an interior "body" as a solid also? Does this get a check mark when you mesh the entire geometry, to indicate that mesh is finished?

May 11, 2021, 09:08		#3
Aarib New Member Aarib Irfan Join Date: Mar 2020 Posts: 18 Rep Power: 6	I get the green check mark after mesh is completed but there is no solid body inside it.

May 11, 2021, 09:12		#4
kjetil Senior Member Join Date: Mar 2009 Location: Norway Posts: 138 Rep Power: 17	Then I guess you must create it prior to meshing?

May 11, 2021, 10:17		#5
Aarib New Member Aarib Irfan Join Date: Mar 2020 Posts: 18 Rep Power: 6	But i want air to flow inside the body from the empty parts. She is a complicated body so i can't create a solid body inside.

May 11, 2021, 10:31		#6
kjetil Senior Member Join Date: Mar 2009 Location: Norway Posts: 138 Rep Power: 17	Are you combining solid, porous and fluid domains? In that case you need "solids" for all of them, and they're then defined differently in CFX/Fluent after meshing.

May 11, 2021, 10:36		#7
Aarib New Member Aarib Irfan Join Date: Mar 2020 Posts: 18 Rep Power: 6	So i can't make the air flow inside if i don't have a solid body inside?

May 11, 2021, 10:38		#8
kjetil Senior Member Join Date: Mar 2009 Location: Norway Posts: 138 Rep Power: 17	Air will flow in their own "fluid domains". Nothing at all will happen in empty spaces. This is very different from when looking at a geometry in a 3D modelling software.

May 11, 2021, 10:45		#9
Aarib New Member Aarib Irfan Join Date: Mar 2020 Posts: 18 Rep Power: 6	Then is there a way to fill the geometry? It's a complicated Geiger and it can't be filled with simple fill command in design modeler

May 11, 2021, 10:57		#10
kjetil Senior Member Join Date: Mar 2009 Location: Norway Posts: 138 Rep Power: 17	This depends on the software. "Volume extract" is one common term. Another way is to use a boolean to subtract a dummy volume from the physical object. Keep in mind that channels and gaps also have to be included, if appropriate.