CFD Online Logo CFD Online URL
Home > Forums > CFX

porous domain

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

LinkBack Thread Tools Display Modes
Old   February 11, 2014, 09:59
Default porous domain
New Member
Join Date: Nov 2013
Posts: 17
Rep Power: 5
lauda is on a distinguished road
Sponsored Links
Hello there,

I'm trying to model a heat exchanger (HX) as porous model. The HX consists of a box with a large number of pipes mainly parallel to each other.. I was thinking to use the isotropic loss option of the porous domain. I have then calculated the liner and quadratic resistance coefficients (CR1 and CR2 in CFX-theory tutorial). I would appreciate if you could confirm that the equations I have used (see below) are correct.

CR1 = K_loss * rho / 2 = Dp / (L*v**2)

where rho is the density, Dp is pressure drop across the HX, L is the HX lenght and v is the stream flow velocity at the HX inlet.

CR2= mu / K_perm = dP / (L * V_s)

where V_s= volume flow rate/cross sectional area.

thanks for your help
lauda is offline   Reply With Quote
Sponsored Links


porous body

Thread Tools
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 On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Radiation at interface between fluid and porous domain Hitch8 CFX 19 April 20, 2015 06:24
Floating point exception: Zero divide liladhar CFX 11 December 16, 2013 05:07
Implementation of a porous domain megacrout OpenFOAM 1 January 12, 2012 08:02
Porous domain set-up from single pressure loss value siw CFX 1 December 8, 2011 17:36
CFX Solver Memory Error mike CFX 1 March 19, 2008 08:22

Sponsored Links

All times are GMT -4. The time now is 07:23.