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

Fuel Mass Fraction visualization

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   August 31, 2017, 02:00
Default Fuel Mass Fraction visualization
  #1
New Member
 
Manigandan.R
Join Date: Mar 2011
Posts: 10
Rep Power: 15
Manigandan.R is on a distinguished road
Hi,
I need to know the details of below questions.
In this model i need to model cold flow modelling with species transport.
I have 10 x 10 x 80 m fluid domain. i have two Inlet, one outlet & wall surfaces. In that two inlet one inlet contains air (compositions of h20, n2,o2) & another inlet contains fuel (compositions of ch4,c2h6,c3h8).

fuel inlet is placed at 20 mm from air inlet location. If i am doing analysis in fluent, i enabled k-epsilon turbulence model with species transport. After analysis while doing postprocessing i need to visualize mass fractions of each compositions of fuel at 10 equal interval.

Question1: From this equal interval planes (z- direction), if i check mass fraction of each fuel composition contours what it is represents in equal planes and also mass fraction is reduced continuously at equal interval planes from inlet to outlet. please explain in details

Question2: if i added all mass fraction in using custom field function: if i multiply with total fuel mass flow rate means is it represents fuel mass flow rate @ that plane and why it is less when compared to fuel inlet. Same step when am i checking in outlet further mass flow rate got reduced. Please explain in detail

Question3: how to check each fuel compositions velocity at particular planes to plot contours? Using custom field function or user defined function. please provide solution.

Question4: defining fuel composition individually in fuel inlet, is we need to provide input to fluent as species mole fraction basis or mass fraction basis (if we have fuel compositions in volume percentage means)


I dont know how to understand plese help me on these above questions.

Last edited by Manigandan.R; September 4, 2017 at 08:14. Reason: Further question added
Manigandan.R is offline   Reply With Quote

Reply

Tags
ansys fluent 14.5, cold flow, fuel mixture, post procesing, species model

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
Species Mass fraction in Fluent prashantthaker208 FLUENT 5 September 30, 2020 00:30
gradient of species mass fraction zhou FLUENT 1 March 14, 2020 07:55
Heat transfer, mass fraction residual problem Whitebear CFX 4 May 19, 2014 05:28
Water subcooled boiling Attesz CFX 7 January 5, 2013 03:32
Does F_YI(f,t,i) get average mass fraction or not? aleisia Fluent UDF and Scheme Programming 0 June 21, 2011 15:52


All times are GMT -4. The time now is 07:46.