CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > General Forums > Main CFD Forum

Modeling Heat Transfer w/ Fluid in COMSOL

Register Blogs Members List Search Today's Posts Mark Forums Read

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   August 26, 2016, 15:36
Default Modeling Heat Transfer w/ Fluid in COMSOL
  #1
New Member
 
California
Join Date: Aug 2016
Posts: 1
Rep Power: 0
dccorbes is on a distinguished road
Does anyone here have experience with COMSOL?

I want to model a system where i have a fluidic channel containing warm fluid running through a block and I want to analyze the heat transfer from the channel into the block .

To establish the warm fluid I put an initial temperature condition at the inlet of the channel. But I think this limits my model since the heat isn't being "carried" by the fluid down the length of the channel. For example I don't see much difference when varying the flow rate which I would expect.

Does anyone know what would be better boundary conditions for this model? Can I put in an equation for heat flux? What variables should the equation include? Should I apply it to the inlet or the walls of my channel?

Thanks!
dccorbes is offline   Reply With Quote

Old   August 27, 2016, 07:23
Default wall boundary conditions
  #2
New Member
 
Join Date: Aug 2016
Posts: 2
Rep Power: 0
tourguy61 is on a distinguished road
Hi,

If you have inlet boundary conditions as inlet flow velocity and inlet temperature, COMSOL will solve the problem according to the wall boundary condition which could be either constant temperature or constant heat flux. When you obtain the solution for either wall BC, check your results with heat transfer books (i.e., Nusselt numbers for laminar and turbulent flows).

Good luck
tourguy61 is offline   Reply With Quote

Reply

Tags
comsol, heat transfer boundary

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Radiation in semi-transparent media with surface-to-surface model? mpeppels CFX 11 August 22, 2019 08:30
Difficulty In Setting Boundary Conditions Moinul Haque CFX 4 November 25, 2014 18:30
Porous domain:Interfacial area density and heat transfer coefficient l.te CFX 2 May 18, 2014 00:45
Heat transfer modeling between two domains jeevan_yadav CFX 15 August 4, 2012 07:39
Heat transfer from porous medium to fluid Ralf Schmidt FLUENT 1 October 30, 2005 07:21


All times are GMT -4. The time now is 22:09.