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

tube bank inertial resistance coefficients

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

Reply
 
LinkBack Thread Tools Display Modes
Old   September 8, 2004, 09:04
Default tube bank inertial resistance coefficients
  #1
Brian
Guest
 
Posts: n/a
Hello, Can anyone suggest how to correctly calculate the inertial resistance coefficients for a bank of tubes?

I'm attempting to apply the fluent porous media model to simulate flow through a bank of tubes. I'm using only the inertial resistance coefficient, as advised by the fluent help files (6.19.2 Momentum Equations for Porous Media).

I have no experimental data with which to calculate the intertial resistance factor - I used the equations provided by fluent for estimating the inertial resistance coefficient for packed beds in fluent help section 6.19.6 (equation number 6.19-17). I estimated the particle diameter that would give a similar void fraction as my bank of tubes.

I am using C2=1.15e+05 in the x direction and C2=1.15e+07 in the y&z directions (to constrain flow in the direction of my tube bank). My solutions will not converge. I realize that using the packed bed equation mentioned above may result in an overestimate for C2. When i scale these coefficients down (C2x=1.15e+03 and C2y=C2z=1.15e+05) the solution seems more likely to converge.

I'm wondering if i'm grossly overestimating the C2 coefficient... so can anyone suggest how to correctly calculate the inertial resistance coefficients for a bank of tubes?

Thank you, Brian
  Reply With Quote

Reply

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
Viscous resistance coefficients in porous medium fpingqian FLUENT 33 July 3, 2015 07:13
Inertial Resistance and Viscous Resistance Data ravitejakatragadda FLUENT 1 September 24, 2014 07:06
porous inertial resistance Lukas STAR-CCM+ 21 March 7, 2012 03:05
viscous resistance and inertial resistance for microfilter zhhjll FLUENT 1 July 14, 2011 08:55
how to calculate the viscous and inertial resistance coefficients? omurakbayir FLUENT 1 November 22, 2010 23:36


All times are GMT -4. The time now is 10:44.