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

Discrepancy between the analytical solution&modeli

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

Reply
 
LinkBack Thread Tools Display Modes
Old   February 14, 2007, 18:27
Default Discrepancy between the analytical solution&modeli
  #1
kk
Guest
 
Posts: n/a
Hi, has anybody tried in modeling first order reaction in Fluent? I set up a batch reactor in Fluent. And a UDS as a reactor. I shut off the velocity and turbulence in solution, just tried to calculate the UDS only. Of course it is unsteady problem, segregated solver, implicit. I set the time size to 1 sec. And found out that the reaction rate from the modeling result was lower that the one I set in source term. (modeling result: C=C0*exp(-0.0062t) source term: C=C0*exp(-0.0076t)). I decreased the time size to 0.5,0.1 sec, the difference even became bigger. I am confused. Can this problem caused by my mesh quality? Any advice is welcome. Thanks in advance.
  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
comparison with analytical results (1D)and(3D) CFX Rogerio Fernandes Brito FLUENT 1 December 2, 2012 06:12
Oscillating Cylinder in Parallel Flow: Analytical Solution startingcfd Main CFD Forum 7 March 23, 2012 06:49
comparison with analytical results (1D)and(3D) CFX Rogerio Fernandes Brito CFX 2 October 28, 2008 21:26
Analytical flow solutions Antonio Main CFD Forum 0 December 14, 2005 15:43
Analytical flow solutions Antonio Main CFD Forum 0 November 15, 2005 17:47


All times are GMT -4. The time now is 06:16.