Heat transfer coeff. between solid and fluid

Fari87 · June 1, 2017, 09:04

Hi all,

I hope u guys can support me as I'm not experienced to Fluent as probably most of you.
During the first step of my investigation I would like to analyse the heat transfer coefficient on a simple cylinder as solid. The domain and solid both are rotationally symmetric. Note: It's just a stationary case and only temperatures are relevant.

I've modeled the assembly (Solid-Domain) in NX, named all the interfaces by using NS-manager and afterwards imported it to Ansys. A contact region was automatically defined by mesh. Additionally I've defined a cylindrical system of coordinates. After creating the mesh I tried to setup the boundary conditions. And here is the problem:

After starting the setup I've noted that my terms from the NS-manager are renamed to walls. The matter is now I can't find the correct interface as I would like to give a temperature to the surface of the cylinder. The interfaces are not highlighted by simple clicking on them. I've also tried to change the adjacent boundaries, but same issue as before... and btw I've already changed the type of the cylinder to solid.

I'm pretty sure it's a cinch for you, could you please support? Thanks in advance.

Best regards
Fari

KaLium · June 2, 2017, 02:31

If you have fluid zone and solid zone, you should have wall and wall-shadow between the zones.

I think that easiest way to find a wall in geometry is to draw a contour on it.

June 1, 2017, 09:04	Heat transfer coeff. between solid and fluid	#1
Fari87 New Member Farhad Join Date: Jun 2017 Posts: 5 Rep Power: 8	Hi all, I hope u guys can support me as I'm not experienced to Fluent as probably most of you. During the first step of my investigation I would like to analyse the heat transfer coefficient on a simple cylinder as solid. The domain and solid both are rotationally symmetric. Note: It's just a stationary case and only temperatures are relevant. I've modeled the assembly (Solid-Domain) in NX, named all the interfaces by using NS-manager and afterwards imported it to Ansys. A contact region was automatically defined by mesh. Additionally I've defined a cylindrical system of coordinates. After creating the mesh I tried to setup the boundary conditions. And here is the problem: After starting the setup I've noted that my terms from the NS-manager are renamed to walls. The matter is now I can't find the correct interface as I would like to give a temperature to the surface of the cylinder. The interfaces are not highlighted by simple clicking on them. I've also tried to change the adjacent boundaries, but same issue as before... and btw I've already changed the type of the cylinder to solid. I'm pretty sure it's a cinch for you, could you please support? Thanks in advance. Best regards Fari

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Error - Solar absorber - Solar Thermal Radiation	MichaelK	CFX	12	September 1, 2016 05:15
Question about heat transfer coefficient setting for CFX	Anna Tian	CFX	1	June 16, 2013 06:28
Error finding variable "THERMX"	sunilpatil	CFX	8	April 26, 2013 07:00
Water subcooled boiling	Attesz	CFX	7	January 5, 2013 03:32
Convective Heat Transfer - Heat Exchanger	Mark	CFX	6	November 15, 2004 15:55

June 2, 2017, 02:31		#2
KaLium Senior Member Kal-El Join Date: Apr 2017 Location: Finland Posts: 150 Rep Power: 9	If you have fluid zone and solid zone, you should have wall and wall-shadow between the zones. I think that easiest way to find a wall in geometry is to draw a contour on it.