[ANSYS Meshing] Meshing a Wake

Olds88 · July 8, 2014, 15:38

Hi,

I'm trying to model heat transfer from a heat sink using Fluent. I have a small part representing a heat source attached to a heat sink. Each is a separate part. I want to apply heat generation to the heat source and then model flow over the assembly.

I'd like to generate a mesh with a refined region in the wake of the heat sink. I have been trying to do this using the body of influence method to control the element size around the heat sink. However, when I create a body around the sink and within the fluid domain, it creates a hole in my fluid domain and I can't seem to get a mesh in the wake.

I have been creating all bodies as frozen bodies thus far and then forming a part from the bodies. This does not seem to be working though.

Am I making a mistake when creating the geometry? How should I go about meshing the wake?

blazejpop · July 9, 2014, 07:53

Switch off a Shared Topology Method in DM. It's in a Body or Part Details.

Olds88 · July 9, 2014, 08:16

Thanks a lot that worked great!

Olds88 · July 9, 2014, 09:11

Blazej,

I got the meshing to work, but I can't get a conformal mesh between my fluid and solid bodies. I need this because I want to simulate the heat transfer between the bodies.

I changed the shared topology method in the details of my part to none.

blazejpop · July 9, 2014, 11:35

Set Shared Topology Method to Automatic for your Part, switch it to None only for a body which will be your Body of Influence.

July 8, 2014, 15:38	Meshing a Wake	#1
Olds88 New Member Eric Join Date: Jun 2014 Posts: 18 Rep Power: 11	Hi, I'm trying to model heat transfer from a heat sink using Fluent. I have a small part representing a heat source attached to a heat sink. Each is a separate part. I want to apply heat generation to the heat source and then model flow over the assembly. I'd like to generate a mesh with a refined region in the wake of the heat sink. I have been trying to do this using the body of influence method to control the element size around the heat sink. However, when I create a body around the sink and within the fluid domain, it creates a hole in my fluid domain and I can't seem to get a mesh in the wake. I have been creating all bodies as frozen bodies thus far and then forming a part from the bodies. This does not seem to be working though. Am I making a mistake when creating the geometry? How should I go about meshing the wake?

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July 9, 2014, 07:53		#2
blazejpop Member Błażej Popławski Join Date: Jul 2013 Posts: 34 Rep Power: 12	Switch off a Shared Topology Method in DM. It's in a Body or Part Details.

July 9, 2014, 08:16		#3
Olds88 New Member Eric Join Date: Jun 2014 Posts: 18 Rep Power: 11	Thanks a lot that worked great!

July 9, 2014, 09:11		#4
Olds88 New Member Eric Join Date: Jun 2014 Posts: 18 Rep Power: 11	Blazej, I got the meshing to work, but I can't get a conformal mesh between my fluid and solid bodies. I need this because I want to simulate the heat transfer between the bodies. I changed the shared topology method in the details of my part to none.

July 9, 2014, 11:35		#5
blazejpop Member Błażej Popławski Join Date: Jul 2013 Posts: 34 Rep Power: 12	Set Shared Topology Method to Automatic for your Part, switch it to None only for a body which will be your Body of Influence.