|
[Sponsors] |
September 3, 2007, 04:18 |
Particle Tracking or additional variables
|
#1 |
Guest
Posts: n/a
|
hi,everyone.
i try to model the pollutants emited from vehicles. i don't know how to begin this work. From tutorial, i find the two ways above(Particle Tracking or additional variables) both seem to be able to model the vehicle pollutants. i wonder which one is better? Anyone can give me some suggestion. Thank you in advance! |
|
September 3, 2007, 19:20 |
Re: Particle Tracking or additional variables
|
#2 |
Guest
Posts: n/a
|
Hi,
Particle tracking is for tracking particles (obviously). If you wish to model particles this may be appropriate but it is not very good for modelling dissipative pollutants. For this case the additional variable approach is a good elementary approach, otherwise you need Eularian multiphase if you want to capture buoyancy of the various gas/vapours and possibly even chemistry if you want to go that far. Glenn Horrocks |
|
September 4, 2007, 02:59 |
Re: Particle Tracking or additional variables
|
#3 |
Guest
Posts: n/a
|
Thank you very much!
but for the additional variable approach, the attribute of the pollutants such as density cannt be set in cfx11. the additional variable is nothing but different from the air. how to set some attribute for additonal vaiable? in addition, i han't found much information about the Eularian multiphase.could you give me more? Thank you very much! |
|
September 4, 2007, 19:33 |
Re: Particle Tracking or additional variables
|
#4 |
Guest
Posts: n/a
|
Hi,
You cannot set a density in the additional variable approach. The fluid can only have the properties of the surrounding fluid. The Eularian Multiphase model is extensively discussed in the documentation. Have a look at tutorial 18 in CFX11. Glenn Horrocks |
|
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
.trk file variables in particle tracking | cfdatrmit | CFX | 2 | April 1, 2018 03:50 |
Blood Damage Modelling via Particle Tracking in a Centrifugal Heart Pump | scatman | CFX | 7 | January 8, 2018 01:59 |
massless particle tracking problem | Renold | FLUENT | 0 | January 26, 2011 15:23 |
Number density tracking rather than particle tracking | Rebecca | Main CFD Forum | 2 | April 23, 2009 13:52 |
Replace periodic by inlet-outlet pair | lego | CFX | 3 | November 5, 2002 21:09 |