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

Coal combustion- Moisture %

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   September 5, 2007, 13:03
Default Coal combustion- Moisture %
  #1
Michael
Guest
 
Posts: n/a
Hello I'm currently trying to do coal combustion. I read the manual/tutorials about how to input coal properties. All of these shows you how to input fuel assumming certain % volatiles, % char, % ash. What if your proximate analysis contains moisture level. How would you input the coal's percentage of moisture in fluent

Thank you in advance
  Reply With Quote

Old   September 7, 2007, 18:15
Default Re: Coal combustion- Moisture %
  #2
Allan Walsh
Guest
 
Posts: n/a
Have you tried the "wet combustion" panel in the injection set-up?
  Reply With Quote

Old   September 10, 2007, 04:39
Default Re: Coal combustion- Moisture %
  #3
IgorB
Guest
 
Posts: n/a
Hi!

I'm having similar problem here. I'm trying to simulate biomass combustion with high moisture content using two mixture fraction (volatiles and char). The question is should I include liquid water H2O(l) in the same stream with char? Fuel stream (volatiles) are given empiricaly so water cannot be added there. "Wet combustion" tab is greyed for some reason.
  Reply With Quote

Old   September 10, 2007, 13:49
Default Re: Coal combustion- Moisture %
  #4
Allan Walsh
Guest
 
Posts: n/a
Igor - check out some of the previous discussion on biomass combustion.
  Reply With Quote

Old   September 11, 2007, 03:56
Default Re: Coal combustion- Moisture %
  #5
IgorB
Guest
 
Posts: n/a
I did that but I could not find the reason why "wet combustion" tab is greyed in Fluent (is it maybe usable only for species transport model?). I tried to include moisture by adding H2O(vapor) in char steam and correcting latent heat in materials panel but i'm not sure if it is correct way. I don't exactly know what laws are included for volatile stream and char stream respectively when using two mixture fraction. I would appriciate any help i can get. Thanks in advance, Igor B.
  Reply With Quote

Reply


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 Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Problem on EDC model for coal combustion lei FLUENT 4 September 3, 2015 09:39
Turbulent Dispersion for Coal Combustion gravis CFX 2 March 23, 2010 23:56
Coal combustion and ash reaction kinetics sega Fluent UDF and Scheme Programming 0 January 21, 2010 08:05
moisture in coal combustion Sheng FLUENT 3 June 15, 2003 19:43
Coal combustion with Fluent 4.5 or 5.0! Sriram Popuri Main CFD Forum 2 July 24, 1999 11:34


All times are GMT -4. The time now is 12:11.