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

coupled solver (again)

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   April 8, 2009, 17:15
Default coupled solver (again)
  #1
New Member
 
Join Date: Apr 2009
Posts: 10
Rep Power: 17
lucioantonio is on a distinguished road
i know i already open a post about this argument, but i didn't have any answer, so i try again...sorry:

hi to all users,
my problem is about the use of coupled solver.
I have a rectangular duct of porous media, the top surface is heated with a heat flux, the bottom surface is adiabatic. if we use the segregated solver we don't have any problem, i obtain the convergence of the solution. While if i use the coupled solver with the same model (our boundary condition is the inlet velocity) i don't obtain the convergence of the solution; in particulary i find that the temperture field is not reasonable and the outlet mass flow (with the iterations) goes from the right value (the same of the inlet mass flow) to zero.

i don't understand why i have two different solution between the two solver.

P.S.: I have to use the coupled solver because my model need to use it (i have to use the gradient of temperature ).

Sorry for my English.
Thank to all.

Best Regards
lucioantonio is offline   Reply With Quote

Reply


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
Coupled solver energy equation problem lucioantonio FLUENT 0 April 3, 2009 11:21
segregated solver vrs coupled solver sm FLUENT 0 November 6, 2007 02:24
switching from coupled solver to segregated Oz FLUENT 2 November 8, 2006 17:02
Convergence with coupled implicit solver Henrik Ström FLUENT 1 October 29, 2005 04:57
can use coupled solver to calculate combustion cfdfans FLUENT 0 November 25, 2003 05:48


All times are GMT -4. The time now is 21:11.