CFD Online Logo CFD Online URL
Home > Forums > Main CFD Forum

error radiation model monte carlo

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

LinkBack Thread Tools Display Modes
Old   October 13, 2010, 15:16
Question error radiation model monte carlo
New Member
Join Date: Oct 2010
Posts: 3
Rep Power: 9
andro is on a distinguished road

I have a problem trying to use the Monte Carlo radiation model, I am applying radiation conditions of tutorial-17 to other geometry, but this is not windows, but several laparas and monitors, surperficies to assign an isotropic flow radiation, the probel I generates the CFX-solver manager, where comiensa the first iteration, but when it comes to calculating the radiation generates the following error and stops the run

================================================== ====================
| Equation | Rate | RMS Res | Max Res | Linear Solution |
| U-Mom | 0.00 | 6.6E-03 | 4.7E-01 | 1.3E-05 OK|
| V-Mom | 0.00 | 6.7E-03 | 4.7E-01 | 1.3E-05 OK|
| W-Mom | 0.00 | 3.4E-02 | 4.6E-01 | 1.1E-05 OK|
| P-Mass | 0.00 | 5.1E-06 | 4.2E-04 | 42.6 9.6E-02 OK|

| ERROR #666000005 has occurred in subroutine WALK. |
| Message: |
| |
| Too many iterations while using Monte Carlo. |
| This may possible be due to: |
| 1 - Highly reflective walls |
| 2 - Small absorption coefficient |
| 3 - Symmetry planes are too close, i.e. 2D geometry |
| 4 - Geometry specification error |

if someone could help me solve this problem would greatly appreciate it.

Last edited by andro; October 14, 2010 at 20:34.
andro is offline   Reply With Quote

Old   February 2, 2012, 10:20
New Member
Turan Dias Oliveira
Join Date: Jun 2010
Posts: 2
Rep Power: 0
toliveira is on a distinguished road
I'm facing the same problem. I'm using windows and this happens after the 08th interation. Im working on simulating a burner with different air-fuel ratios. Whit less air then in the stoichiometric case this error occurs.
If I use a more refined mesh this happens even with stoichiometric case and with cases that have more air than that. Using less processors this error occurs in case where it doesn't show up using more processors. Mybe if I had more processors or memory I could keep on with the simulations.
I would also really appreciate if someone could help us with this.

toliveira is offline   Reply With Quote


error, monte carlo, radiation, radiation model, tutorial 17

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
Superlinear speedup in OpenFOAM 13 msrinath80 OpenFOAM Running, Solving & CFD 18 March 3, 2015 06:36
Monte Carlo Option Not Available flattie CFX 5 December 10, 2010 20:06
multi fluid mixture model issue rystokes CFX 3 August 9, 2009 19:13
parallel processing for Monte Carlo radiation possible ? Malorie CFX 4 June 11, 2009 06:55
Monte Carlo PDF code Atsushi Yamada Main CFD Forum 0 April 5, 2001 20:21

All times are GMT -4. The time now is 23:20.