CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > Siemens > STAR-CCM+

(Star-CCM+) Spontaneous Coal Combustion

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   October 22, 2021, 23:48
Default (Star-CCM+) Spontaneous Coal Combustion
  #1
New Member
 
TommyK
Join Date: Oct 2021
Posts: 2
Rep Power: 0
kbs4520 is on a distinguished road
Hi I'm master degree student in Korea.
I'm studying about spontaneous coal combustion in coal stockpile.

I'm trying to simulate spontaneous coal combustion according to a paper
"Transient CFD modelling of low-temperature spontaneous heating
behaviour in multiple coal stockpiles with wind forced convection"
written by Jian Zhang

< Introduction of simulation>

1. There is two domain in simulation, flowfield and coal stockpile field.

2. In flowfield domain, it consider only wind vector In Coalstockpile domain, it consider reacting regime.

3. Firstly freeze Segregated Species and Segregated Energy solver and run simulation.
Secondly, after flowfield vectors are stabilized, freeze Wall Distance, Segregated Flow, K-Epsilon Turbulence, K-Epsilon Turbulent Viscosity Solver and activate Segregated Species and Segregated Energy solver and run simulation.

4. Reaction Scheme
RawCoal + O2 -> CO2 + 0.1CO + Heat
(actually I assume Rawcoal as C:1.1,O:0.1)

Using Physics Model :

Multi-Component Gas, Reacting, Reacting Species Transport, Eddy Break-up, Segregated Flow, K-Epsilon Turbulence, Surface Chemistry

<Status of my simulation>

I simulate flow field vector as shown in paper. But when I simulate second phase (reacting regime), the reaction doesn't seem to work properly.
In Residual Plot, I could only check Energy and N2.

I don't know why the reaction doesnot occur..

Is my Physics model wrong?

I want to attach sim file in here, but becuase of file size limiation I cannot attach sim file here.
If it is okay, I will send my sim file through e-mail.

Thanks
kbs4520 is offline   Reply With Quote

Old   January 8, 2023, 10:07
Question have you found the soultion to the problem
  #2
New Member
 
tanmay dasgupta
Join Date: Jan 2023
Posts: 1
Rep Power: 0
tdg@1992 is on a distinguished road
I am a research scholar in India working on spontaneous combustion kinetics of coal. even i need to simulate low temperature oxidation in coal using fluent.
can you please show me a way to have an approach from the very beginning
tdg@1992 is offline   Reply With Quote

Reply

Tags
ccm+ help, coal combustion, coal oxidation, spontaneous combustion, star-ccm+

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Coal combustion modeling by pdf method in star ccm+ rajneesh15 STAR-CCM+ 2 February 8, 2016 10:25
problem when imported geometry from 3D CAD to star ccm, TAREK GANAT STAR-CCM+ 1 May 21, 2013 23:15
[Commercial meshers] Using starToFoam clo OpenFOAM Meshing & Mesh Conversion 33 September 26, 2012 05:04
[Other] StarToFoam error Kart OpenFOAM Meshing & Mesh Conversion 1 February 4, 2010 05:38
[Commercial meshers] Trimmed cell and embedded refinement mesh conversion issues michele OpenFOAM Meshing & Mesh Conversion 2 July 15, 2005 05:15


All times are GMT -4. The time now is 15:40.