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

PaSR combustion; Species for dieselFOAM and coalChemistryFOAM

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

Reply
 
LinkBack Thread Tools Display Modes
Old   October 15, 2010, 12:09
Default PaSR combustion; Species for dieselFOAM and coalChemistryFOAM
  #1
Member
 
N. A.
Join Date: May 2010
Posts: 64
Rep Power: 7
N. A. is on a distinguished road
Hello Foamers,

I have few points that I need help to understand.

Q1. I found that for dieselFOAM and the tutorial aachenBomb, the initial sub-directory ("0") does not have file for C7H16, CO2 and H2O. It only has O2 and N2 files with BC specified. As the solution progresses, the intermediate results give C7H16, CO2 and H2O files. if I compare a similar two-phase flow (lagrangian-Eulerian approach) of using coalChemistryFOAM and the tutorial simpilfiedSiwek, then there are species initial and BC file in the sub-directory 0.
Why is this difference in the two approaches. what should be done so that the simplifiedSiwek does not read the species file in the sub-directory of "0", just as it is done in aachenbomb using dieselFOAM.

Q2.
The dieselFOAM solver: dieselFOAM.C has calculations of kappa and other parameters related to Chalmers PaSr combustion model. However coalChemistryFOAM.C (for coalChemistryFOAM solver) do not include calculations of these parameters. Then what is the combustion model used in coalChemistryFOAM.

Q3. Has anyone implemented heterogenous reaction and coal gasification reaction mechanism in OpenFOAM. If yes I would like to share some experience in solving chemistry for these reaction mechanism.


Any thoughts, discussion and suggestions on above points is welcomed and much appreciated.

Thanks,
Nir
N. A. is offline   Reply With Quote

Old   January 17, 2011, 11:07
Default
  #2
Senior Member
 
Nilesh Rane
Join Date: Apr 2010
Posts: 122
Rep Power: 7
nileshjrane is on a distinguished road
Ans to Q2:

See "chemistry.h" file in the folder of "coalChemistryFoam".
__________________
Imagination is more important than knowledge..
nileshjrane is offline   Reply With Quote

Old   June 13, 2011, 23:13
Default
  #3
Member
 
桂莹
Join Date: Apr 2011
Posts: 36
Rep Power: 6
yingkun is on a distinguished road
Hi,Nilesh
do you use coalChemistryFoam?my case has two inlets/one outlet,what should I do with the two inlets(inlet1 is primary jet include coal and air which is 300K,and inlet2 is preheated gas which is 1500K to ignite the coal )?where to set the coal properties(in constant/coalcloud1properties?)
I have so many questions,I hope you could answer me.
if you see, please add my QQ:549844146
Best regards
ying
yingkun is offline   Reply With Quote

Old   June 17, 2011, 03:32
Default
  #4
Senior Member
 
Nilesh Rane
Join Date: Apr 2010
Posts: 122
Rep Power: 7
nileshjrane is on a distinguished road
Sorry to disappoint you, but i never used this solver..i thought of using it but then figured out some other waysfor my problem..
__________________
Imagination is more important than knowledge..
nileshjrane 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
Solving for an additional species CO in coalChemistryFoam N. A. OpenFOAM Programming & Development 2 November 13, 2014 09:43
char combustion chemistry; multi-step raection, coalChemistryFoam N. A. OpenFOAM Programming & Development 1 November 5, 2014 03:55
coalChemistryFoam karam OpenFOAM 3 December 4, 2012 09:58


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