heat conduction in 2D

libya81 · February 10, 2018, 23:07

Hello,

I am modelling a 2D cylinder with a fluid flow inside. there is a heat on the outer surface of the cylinder (Temperature). the heat sould transfer to the inside fluid by conduction.

the problem is here, there is no heat goes to the fluid. I know there is no shell conduction in 2D, but how can I make the heat pass the cylinder ?

I have draw the fluid with the cylinder, and did mesh both.

Thanks in advance

LuckyTran · February 14, 2018, 17:32

You need an interface between cell zones to couple them. If you meshed it correctly, you have two "walls" that each have the "coupled" boundary condition in the thermal tab.

libya81 · February 14, 2018, 21:23

Thanks for the replay.

I have got new 4 walls, two of them with coupled boundary conditions and other two just a regular walls.

Is that correct ?

thank you

libya81 · February 14, 2018, 21:39

Sorry, but I have another question.

Since, the heat is on the outer surface, that suppose to go to the inside fluid through the cylinder by conduction.

Am I need to set any boundary for the new 2 walls (not the coupled ones), or just leave it for the outer surface ?

thanks

February 10, 2018, 23:07	heat conduction in 2D	#1
libya81 New Member Join Date: Apr 2012 Posts: 24 Rep Power: 14	Hello, I am modelling a 2D cylinder with a fluid flow inside. there is a heat on the outer surface of the cylinder (Temperature). the heat sould transfer to the inside fluid by conduction. the problem is here, there is no heat goes to the fluid. I know there is no shell conduction in 2D, but how can I make the heat pass the cylinder ? I have draw the fluid with the cylinder, and did mesh both. Thanks in advance

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February 14, 2018, 17:32		#2
LuckyTran Senior Member Lucky Join Date: Apr 2011 Location: Orlando, FL USA Posts: 5,674 Rep Power: 66	You need an interface between cell zones to couple them. If you meshed it correctly, you have two "walls" that each have the "coupled" boundary condition in the thermal tab.

February 14, 2018, 21:23		#3
libya81 New Member Join Date: Apr 2012 Posts: 24 Rep Power: 14	Thanks for the replay. I have got new 4 walls, two of them with coupled boundary conditions and other two just a regular walls. Is that correct ? thank you

February 14, 2018, 21:39		#4
libya81 New Member Join Date: Apr 2012 Posts: 24 Rep Power: 14	Sorry, but I have another question. Since, the heat is on the outer surface, that suppose to go to the inside fluid through the cylinder by conduction. Am I need to set any boundary for the new 2 walls (not the coupled ones), or just leave it for the outer surface ? thanks