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

Help!! Species Transport-Mass Fraction

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

LinkBack Thread Tools Display Modes
Old   March 12, 2014, 07:23
Default Help!! Species Transport-Mass Fraction
New Member
Prashant Thaker
Join Date: Jul 2013
Location: guwahati, India
Posts: 15
Rep Power: 6
prashantthaker208 is on a distinguished road
anyone familiar with Street canyon problem might be able to help.

I am modeling carbon monoxide dispersion using species transport in Fluent.
I am specifying road surface as a Mass Flow Inlet from which CO is emitted (g/s). I am using Mixture Template (air-CO)
I know the CO emission rate which i specify (g/s)

Here is the question:
As the emission is of CO, I set CO mass fraction as 1.

upon convergence, I get very high conc of CO (10^-4 kmol/m3)
other researchers report this in the range of (10^-8 kmol/m3)

What might be the problem?

Kindly Help,
Prashant Thaker
prashantthaker208 is offline   Reply With Quote


mass fractions, species transport, street canyon

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
Species Mass fraction in Fluent prashantthaker208 FLUENT 4 July 3, 2014 23:41
Problem of simulating of small droplet with radius of 2mm liguifan OpenFOAM Running, Solving & CFD 5 June 3, 2014 02:53
mass flow in is not equal to mass flow out saii CFX 2 September 18, 2009 08:07
PB: Saving mass fraction of species on two points with an udf biget.a FLUENT 2 July 23, 2009 03:06
mass fraction of species Ahmed FLUENT 0 April 18, 2007 11:57

All times are GMT -4. The time now is 08:09.