how to simulate the conduction without meshing the wall layer

buidu · May 18, 2015, 09:53

I am runing a simulation on the convective heat transfer on a cylinder. The cylinder is made of almunium and has a thickness of 30mm. It has a constant inner surface temperature of 40 degree. I want to study heat convection on the outer surface. Can I use shell conduction here? And how should I make the setup? Thank you for your answer.

regards,
Hao

jpando · May 18, 2015, 10:19

Which software are you using to simulate this problem?

This will determine how you will set it up.

buidu · May 18, 2015, 14:27

Quote:

Originally Posted by jpando

Which software are you using to simulate this problem?

This will determine how you will set it up.

I am using fluent...

jpando · May 18, 2015, 16:26

Fluent has an option for the boundary to enable shell conduction where you specify a thickness and material. The Thickness of the shell will be out of the fluid region unless you specify shell conduction on an internal-wall. Then the layers will be between the boundary and its shadow.

To specify a temperature, I think you turn on shell conduction and the temperature you input will be on the outer surface of the shell. I am not completely sure about this and you may have to refer to the Fluent User Manual to make sure that's correct.

If that doesn't work you can specify a convection boundary condition on the wall at the temperature you want with a very high convection heat transfer coefficient.

May 18, 2015, 09:53	how to simulate the conduction without meshing the wall layer	#1
buidu New Member buidu Join Date: Dec 2014 Posts: 27 Rep Power: 12	I am runing a simulation on the convective heat transfer on a cylinder. The cylinder is made of almunium and has a thickness of 30mm. It has a constant inner surface temperature of 40 degree. I want to study heat convection on the outer surface. Can I use shell conduction here? And how should I make the setup? Thank you for your answer. regards, Hao

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May 18, 2015, 10:19		#2
jpando New Member Join Date: May 2012 Posts: 26 Rep Power: 13	Which software are you using to simulate this problem? This will determine how you will set it up.

May 18, 2015, 16:26		#4
jpando New Member Join Date: May 2012 Posts: 26 Rep Power: 13	Fluent has an option for the boundary to enable shell conduction where you specify a thickness and material. The Thickness of the shell will be out of the fluid region unless you specify shell conduction on an internal-wall. Then the layers will be between the boundary and its shadow. To specify a temperature, I think you turn on shell conduction and the temperature you input will be on the outer surface of the shell. I am not completely sure about this and you may have to refer to the Fluent User Manual to make sure that's correct. If that doesn't work you can specify a convection boundary condition on the wall at the temperature you want with a very high convection heat transfer coefficient.