CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Fluent UDF and Scheme Programming

Coal combustion and ash reaction kinetics

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

Reply
 
LinkBack Thread Tools Display Modes
Old   January 21, 2010, 09:05
Default Coal combustion and ash reaction kinetics
  #1
Senior Member
 
sega's Avatar
 
Sebastian Gatzka
Join Date: Mar 2009
Location: Frankfurt, Germany
Posts: 729
Rep Power: 11
sega is on a distinguished road
Hello World.

I have opened two different threads before and got very useful answers.
Both questions related to the same problem and now its time to put them together into one thread.

I'm want to do coal combustion with the Discrete Phase Model.

This sounds like the standard combustion model and the governing DPM laws (1, 4, 5, 6) for heating, devolatilization and surface combustion.

BUT: The goal of my work is to determine the behaviour of the incombustible parts of the coal.
Am I right that the standard laws of coal combustion do no detailed analysis of the mineral ashes inside the coal particle?

So, this is where my problem come into play:
I want to describe the reaction kinetics of round about 25 ash/mineral components.

First of all: How do I initialize suche a coal particle containing volatile parts, combustible parts and 25 different uncombustible parts?

Second - and far more important: Where do I have to implement the reaction kinetics equations for the uncombustible parts? In the DPM_LAW section?
So far I have thought about the DPM_LAW section as the section containing the code for the combustible parts?!

So where to start? Any help is appreciated.
Haye a nice day!
Sebastian
__________________
Schrödingers wife: "What did you do to the cat? It's half dead!"
sega 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
HOW TO SET CONSTRAINTS FOR COAL COMBUSTION MODEL YNW CFX 0 February 25, 2003 04:33


All times are GMT -4. The time now is 03:23.