CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > FLUENT

dpm drag coefficient

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

Reply
 
LinkBack Thread Tools Display Modes
Old   February 19, 2011, 06:54
Default dpm drag coefficient
  #1
New Member
 
Igor Bonefacic
Join Date: Mar 2009
Location: Rijeka, Croatia
Posts: 5
Rep Power: 8
igorb is on a distinguished road
Hello!

I'm trying to simulate pulverized biomass combustion and would like to implement custom drag laws on biomass particles. I have several injections of biomass particles of different shapes and sizes and would like to assign different drag coefficients for different injections. For example injection-1 are cilindrical particles injection-2 flake-like etc. my question is how to identify injections in UDF? I tried with something like this:

if (p->injection->name=="injection-1")
{
/* ...calculate Drag for cilindrical particle*/
..
..
}
else
{
Drag=SphereDragCoeff(RE);
}
return(Drag);

But in this case sphere drag law is used even for "injection-1". btw. "injection-1" is the name of injection assigned in injections panel under injection name. Where am I making a mistake?

Thanks in advance,
Igor B.
igorb is offline   Reply With Quote

Reply

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
Drag coefficient, DPM. jorge poyatos FLUENT 14 January 20, 2012 14:41
Drag Coefficient Convergence Problem John FLUENT 16 September 4, 2009 02:44
Drag coefficient for parcels in dieselFoam sebastian_vogl OpenFOAM Running, Solving & CFD 5 December 31, 2008 13:19
Automotive test case vinz OpenFOAM Running, Solving & CFD 98 October 27, 2008 09:43
DPM drag coefficient Spielkind FLUENT 1 August 12, 2007 12:27


All times are GMT -4. The time now is 22:44.