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

help about DEFINE_HET_RXN_RATE

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

Reply
 
LinkBack Thread Tools Display Modes
Old   March 7, 2014, 23:43
Default help about DEFINE_HET_RXN_RATE
  #1
New Member
 
CHEN LONG
Join Date: Oct 2013
Posts: 8
Rep Power: 4
anawana is on a distinguished road
My academic interest is coal gasification and combustion. Recently I use ANSYS FLUENT 14.0 to simulate the process of gasification and combustion. As the carbon conversion rate is low about 80% in the PDF model, so I decide to add the UDF of Heterogeneous reactions to the PDF model so that the conversion rate will be improved. However, to my confusion ,there are two Macos for heterogeneous reaction:DEFINE_HET_RXN_RATE and DEFINE_PR_RATE in the<<ansys fluent 14.0 UDF manual>>.As to the manual, the DEFINE_HET_RXN_RATE is used in the multiphase model, so it may be suit for fluidized bed because we usually use the Euler to Euler model to simulate it. But to Tecaxo gasifier which is belong to entrained flow gasifier, we usually Euler- Lagrangian method to simulate the reaction process. I use the DPM model to represent the coal particles. So my question is that whether the DEFINE_HET_RXN_RATE is suit for the Texaco? Somebody help me!
anawana 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



All times are GMT -4. The time now is 04:17.