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

contaminant modelling

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

LinkBack Thread Tools Display Modes
Old   July 14, 2004, 01:47
Default contaminant modelling
Posts: n/a
hello all. I have a room to model contaminants in. A flow equation,a temprature equation and a contaminant equation. I want to model the contaminants like the temperature equation, I mean using "c", no. of particles per volume flow, instead of "T", temperature. But Dears the problem is the boundary conditions,I mean for example on the walls, what is the boundary conditions? Thank you all.
  Reply With Quote

Old   July 14, 2004, 09:09
Default Re: contaminant modelling
Posts: n/a
dear sir,

it all depnds on the contaminant you have. Is it concervative or nonconservative ? If it is conservative, then you should have an idea of the concentration distribution along the vertical direction , for example, you can establish that by experiment.

If it nonconservative, then pls make sure that there is exchange with the boundary. Then you can use a pick-up function like in sediment transport modeling.


  Reply With Quote

Old   July 15, 2004, 02:43
Default Re: contaminant modelling
Posts: n/a
Unless there is a source or sink of contaminants at walls, the BC there should be zero flux (in analogy to adiabatic BC for the energy).

I hope this helps, Rami
  Reply With Quote

Old   July 17, 2004, 03:53
Default Re: contaminant modelling
Posts: n/a
Hello. We know the no. of particles and the velocity coming in. Thank you Yonas. Thank you Rami. your idea is helpful. sincerely,mhf
  Reply With Quote


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
Numercial Simulation on Contaminant Distribution Apple L S Chan Main CFD Forum 4 October 24, 2011 07:01
Contaminant Removal By Ventilation ternik OpenFOAM 10 March 18, 2010 09:28
Advice on multi-phase flow modelling Martin Main CFD Forum 3 October 14, 2008 05:16
how to ensure that your modelling is correct rvndr Main CFD Forum 7 March 1, 2004 13:21
Computational Modelling of Vortex Separators May Lim Main CFD Forum 6 November 13, 1998 13:36

All times are GMT -4. The time now is 00:35.