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

reactingFoam - wrong (temperature) profile

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   July 28, 2011, 10:43
Default reactingFoam - wrong (temperature) profile
  #1
Member
 
Tibo
Join Date: Jun 2011
Posts: 68
Rep Power: 15
megacrout is on a distinguished road
Hi everyone,

I used the tutorial of reactingFoam (counterFlowFlame2D) to simulate an adiabatically reacting stream flowing through a pipe.

All I modified is blockMesh and the boundary conditions accordingly (kept the already existing inlet, outlet and empty conditions, added wedge conditions where needed and looked at some other tutorials for the remaining side: the pipe wall).
Reaction, physical properties, constants, equations, schemes, initial conditions... I´m pretty sure all other parameters remained unchanged. I just checked it out again and it looks so.

However, I get ridiculously high temperatures (up to 4500K). When I implement turbulent conditions, it gets even worse and the sadly famous Janaf error pops out.
After some basic Google research, it seems T should not exceed ca. 2200-2300K. The tutorial actually leads to a maximal temperature of about 2300K.

I expect the mistake to come from the boundary conditions I implemented for the pipe wall but I can´t say which one(s) are wrong exactly. I´d be glad if someone could help me finding it out.

All case files (0, constant, system) are in the appendix.
Even though it´s using reactingFoam, the computation does not last too long (not even 10minutes on my laptop).

Many thanks in advance.

Tibo
Attached Files
File Type: zip reactive_laminar.zip (15.6 KB, 18 views)
megacrout is offline   Reply With Quote

Old   August 1, 2011, 06:11
Default
  #2
Member
 
Tibo
Join Date: Jun 2011
Posts: 68
Rep Power: 15
megacrout is on a distinguished road
Can anyone help, please?
megacrout is offline   Reply With Quote

Reply

Tags
boundary conditions, counterflowflame, reactingfoam, temperature profile


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
Appling a linear temperature profile to a surface safikhani_hamed FLUENT 0 December 8, 2010 15:59
reactingFoam: adiabatic flame temperature rFkhemek OpenFOAM 2 July 31, 2009 07:42
giving temperature profile nag FLUENT 1 May 26, 2008 19:50
Parabolic temperature Inlet Profile in a tube majestywzh FLUENT 0 April 9, 2003 07:37
temperature profile on boundary sivakumar FLUENT 5 November 24, 2002 01:58


All times are GMT -4. The time now is 16:54.