Convection Coefficient (Heat transfert coef)

YuguiYo · July 19, 2016, 08:16

Hi all,

I'm trying to export the convection coefficient from CFX-post.

My configuration is simple : a solid immersed in water.
The configuration is a like-2D, which means that i've created a 3D from a 2D with a thin thickness, and with BC symmetry on all the opposite faces.

For now what i've done is to create a line at the wall of my solid, and export "heat transfert coefficient".

Now i want to see the difference in convection coeff value if the solid temperature changes. But then i'm facing a big issue :

How can I fixed the temperature of the solid (and no the walls of the solid) in CFX (without using a source power) ?

If anybody can help, it 'll be truly appreciated !!

Bye,

Hugo

evcelica · July 19, 2016, 16:32

Why do you even need the solid in there? Why not just have the fluid walls at a fixed temperature?

Make sure you read the FAQs on heat transfer coefficient in CFX, it isn't what you think by default.

July 19, 2016, 08:16	Convection Coefficient (Heat transfert coef)	#1
YuguiYo New Member Hugo Regina Join Date: Apr 2016 Posts: 23 Rep Power: 10	Hi all, I'm trying to export the convection coefficient from CFX-post. My configuration is simple : a solid immersed in water. The configuration is a like-2D, which means that i've created a 3D from a 2D with a thin thickness, and with BC symmetry on all the opposite faces. For now what i've done is to create a line at the wall of my solid, and export "heat transfert coefficient". Now i want to see the difference in convection coeff value if the solid temperature changes. But then i'm facing a big issue : How can I fixed the temperature of the solid (and no the walls of the solid) in CFX (without using a source power) ? If anybody can help, it 'll be truly appreciated !! Bye, Hugo

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July 19, 2016, 16:32		#2
evcelica Senior Member Erik Join Date: Feb 2011 Location: Earth (Land portion) Posts: 1,167 Rep Power: 23	Why do you even need the solid in there? Why not just have the fluid walls at a fixed temperature? Make sure you read the FAQs on heat transfer coefficient in CFX, it isn't what you think by default.