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

Premixed Combustion

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   August 16, 2015, 07:21
Default Premixed Combustion
  #1
New Member
 
Ngo Thien Tu
Join Date: Aug 2015
Posts: 9
Rep Power: 11
ngothientu is on a distinguished road
Hi all,
I have a problem that when I simulate Premixed Combustion LPG(60%Propane+40%Butane) with air in Fluent. But when I chose Premixed Combustion and I can't input species of propane or Butane, also equivalent ratio, mass fraction in Material tab. Could you help me? How to simulate Premixed Combustion LPG/air in Fluent? Thank you so much.
ngothientu is offline   Reply With Quote

Old   August 20, 2015, 09:41
Default
  #2
New Member
 
Muniraja
Join Date: Aug 2015
Posts: 4
Rep Power: 11
Muniraja is on a distinguished road
Hello,

I am also new to the combustion simulation. After working for few weeks I understood few things. Please don't take them for granted as verification from experienced users is still needed.

Premixed combustion:
No, you cannot simply select fuels, equivalence ratios etc...
You need to calculate the thermo chemical properties of the Air-Fuel mixture you wanted to burn separately. Then you need to create a mixture under materials tab and input those values. ( you need to define properties of mixture )

viz. Adiabatic Unburnt Density, Adiabatic Unburnt Temperature, Adiabatic burnt Temperature, Laminar Flame Speed & Critical Rate of Strain.

In case if you are solving under non-adiabatic condition then additional information regarding Heat of Combustion, Unburnt Fuel Mass Fraction, etc should be supplied.
Muniraja is offline   Reply With Quote

Old   September 9, 2015, 16:45
Default
  #3
New Member
 
Younis Najim
Join Date: Apr 2013
Location: Michigan State University
Posts: 12
Rep Power: 13
Heat80 is on a distinguished road
Hi
find your mixture heat of combustion then the mixture fraction which reflect your stoichiometric ratio then mixture molecular weight and laminar flame speed then plug these values into mixture material properties
Cheers
YN
Heat80 is offline   Reply With Quote

Old   October 23, 2015, 03:18
Default premixed combustion
  #4
New Member
 
aditya fabrication
Join Date: Mar 2015
Posts: 10
Rep Power: 11
Purushottam More is on a distinguished road
HI,
I am a newer in premixed combustion. When I use the FLUENT to modeling, I am confusing about the premixed combustion using Zimout model in FLUENT. I can't find where can I specify the mixture(methane-air) equivalence ratio or about the mixture materials.
Anyone knows how to solve it ? Please help me. Thanks in advance! This question is confusing me several days!
Best regards!
Purushottam More is offline   Reply With Quote

Old   October 29, 2015, 02:47
Default
  #5
New Member
 
Muniraja
Join Date: Aug 2015
Posts: 4
Rep Power: 11
Muniraja is on a distinguished road
Purushottam More inbox me your mail id
Muniraja is offline   Reply With Quote

Old   October 29, 2015, 03:55
Default premixed combustion using zimont model
  #6
New Member
 
aditya fabrication
Join Date: Mar 2015
Posts: 10
Rep Power: 11
Purushottam More is on a distinguished road
purushottammore1991@gmail.com
Purushottam More is offline   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
Modelling of premixed combustion in a burner rig ThomasS FLUENT 12 September 7, 2018 14:07
Non Premixed Combustion santhosh1987 FLUENT 3 January 2, 2017 11:42
Partially Premixed Combustion - Direct Fired Boiler oknus FLUENT 0 April 10, 2012 11:52
Premixed Combustion IS FLUENT 3 July 9, 2010 21:22
Non-adiabatic Premixed combustion through scriptin Mahesh FLUENT 0 March 31, 2007 09:19


All times are GMT -4. The time now is 23:45.