smoke distribution modelling

July 12, 2007, 09:03

Hi Experts,

I am modelling the smoke distribution in a train tunnel. This is a transient analysis, and I have two doubts. 1. I want to model fans as constant momentum source. I am not getting the units of momentum source in the input box. 2. I am getting the warning of 'turbulent viscosity is limited to viscosity ratio of 1E5. This region is the wall of tunnel.

How to resolve this issue.

Thanks in advance.

July 12, 2007, 11:07

2) http://www.cfd-online.com/Wiki/Fluen...I_handle_it.3F

July 13, 2007, 09:02

Thanks JOE. Sorted out.

July 12, 2007, 09:03	smoke distribution modelling	#1
carno Guest Posts: n/a	Hi Experts, I am modelling the smoke distribution in a train tunnel. This is a transient analysis, and I have two doubts. 1. I want to model fans as constant momentum source. I am not getting the units of momentum source in the input box. 2. I am getting the warning of 'turbulent viscosity is limited to viscosity ratio of 1E5. This region is the wall of tunnel. How to resolve this issue. Thanks in advance.

July 12, 2007, 11:07	Re: smoke distribution modelling	#2
Joe Guest Posts: n/a	2) http://www.cfd-online.com/Wiki/Fluen...I_handle_it.3F

July 13, 2007, 09:02	Re: smoke distribution modelling	#3
carno Guest Posts: n/a	Thanks JOE. Sorted out.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Car park ventilation and impulse fans	guillaume	Phoenics	9	October 27, 2015 06:57
Questions about smoke modeling using CFX	rafiktharwat	CFX	0	March 14, 2011 12:38
Smoke modelling in CFX 5	Peter	CFX	5	March 13, 2011 18:58
Modelling airflow distribution in a room	gangstagan	FLUENT	1	January 21, 2011 13:51
Smoke Modelling	Oli	CFX	1	August 23, 2007 19:17