Solid to Fluid Heat Transfer Modelling Problem

bortonj88 · October 27, 2011, 19:55

Hello

I am attempting to model, a solid Heat exchanger with one side set to a constant temperature and water flowing through extracting the heat energy and cooling the interior of the heat exchanger down in ANSYS FLUENT.

I have a running model, however there is no heat transfer occuring between the solid and fluid. They are in contact, and there is a quite consideerable temperature gradient.

Does anyone have any suggestions on a solution to my problem?

Thanks
JB

mettler · October 28, 2011, 10:08

how did you set up the volumes? you have to make sure the mesh is the same at the place where the solid and fluid meet.

bortonj88 · November 14, 2011, 15:15

Quote:

Originally Posted by mettler

how did you set up the volumes? you have to make sure the mesh is the same at the place where the solid and fluid meet.

Thanks for the reply.

I created the solid first, froze it, and then created the fluid by doing a boolean subtraction. They are both set to their respective states in Design modeller, (Solid/fluid)

Is there any way of checking if the nodes meet up? and is there a particular method I am supposed to use?

Thanks
JB

mettler · November 14, 2011, 15:21

I am assuming you have something like a tube-in-tube looking thing. The way I would mesh that is by picking the right edge of the outer tube and putting equal spaced nodes on that, and then the same thing for the edge of the inner tube. I would do the same for the opposite side. Then, I would mesh the right hand face (tube) and then the face of the inner tube (fluid section). Then, cooper mesh that thru the whole thing.

October 27, 2011, 19:55	Solid to Fluid Heat Transfer Modelling Problem	#1
bortonj88 New Member John Borton Join Date: Oct 2011 Posts: 4 Rep Power: 15	Hello I am attempting to model, a solid Heat exchanger with one side set to a constant temperature and water flowing through extracting the heat energy and cooling the interior of the heat exchanger down in ANSYS FLUENT. I have a running model, however there is no heat transfer occuring between the solid and fluid. They are in contact, and there is a quite consideerable temperature gradient. Does anyone have any suggestions on a solution to my problem? Thanks JB

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Heat transfer between fluid-solid domains doesn't occur	Gandin	FLUENT	37	August 1, 2019 03:29
Conjugate heat transfer problem	hvem10	FLUENT	2	October 29, 2009 18:31
increasing mesh quality is leading to poor convergence	tippo	CFX	2	May 5, 2009 11:55
No Heat Transfer between two solid domains	Mike ZH	CFX	7	July 26, 2008 17:50
urgent: heat transfer fluid to solid	marco	FLUENT	1	October 28, 2005 23:17

October 28, 2011, 10:08		#2
mettler Senior Member Andrew Join Date: Mar 2009 Location: Washington, DC Posts: 211 Rep Power: 18	how did you set up the volumes? you have to make sure the mesh is the same at the place where the solid and fluid meet.

November 14, 2011, 15:21		#4
mettler Senior Member Andrew Join Date: Mar 2009 Location: Washington, DC Posts: 211 Rep Power: 18	I am assuming you have something like a tube-in-tube looking thing. The way I would mesh that is by picking the right edge of the outer tube and putting equal spaced nodes on that, and then the same thing for the edge of the inner tube. I would do the same for the opposite side. Then, I would mesh the right hand face (tube) and then the face of the inner tube (fluid section). Then, cooper mesh that thru the whole thing.