CFD Online Logo CFD Online URL
Home > Forums > CFX

Passing of gas thru sand

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

LinkBack Thread Tools Display Modes
Old   October 15, 2007, 03:58
Default Passing of gas thru sand
Posts: n/a

I would like to simulate passage of ammonia gas thru compacted sand. I am only interested in how the gas flows in the domain. Can someone let me know how to set up the problem in CFX 11? Can this be performed by using Sand as a porous medium and use particle tracking for the gas?

Thanks, Sans
  Reply With Quote

Old   October 15, 2007, 04:44
Default Re: Passing of gas thru sand
Posts: n/a
Depends on what exactly are you seeking from CFD.

1) If you just want to see effect of sand on gas flow in terms of pressure drop & change in velocity, but do not want to see effect of gas flow on sand particles, then you can model sand portion as porous domain. Define volume porosity for this porous domain. Keep rest of the domain as only gas domain. That's it. Nothing else is required. No need to even go for particle tracking. Solve this physics and plot streamlines in post to see change in velocity & check pressures at inlet/outlet of your porous domain to check effect on pressure.

2) But, if you also want to see effect of gas flow on sand particles, then probably it's nearly impossible. I have never tried that.

This is want I think. Hope it helps.

Best luck,

  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
Constant velocity of the material Sas CFX 15 July 13, 2010 08:56
mass flow in is not equal to mass flow out saii CFX 2 September 18, 2009 08:07
Two-Phase Buoyant Flow Issue Miguel Baritto CFX 4 August 31, 2006 12:02
Gas pressure question Dan Moskal Main CFD Forum 0 October 24, 2002 22:02

All times are GMT -4. The time now is 10:37.