CFD Online Logo CFD Online URL
Home > Forums > FLUENT

about temperature rising in fluent5.4.8

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

LinkBack Thread Tools Display Modes
Old   April 3, 2001, 21:37
Default about temperature rising in fluent5.4.8
Posts: n/a
Sponsored Links

1. I am applying fluent to simulate combustion of gas(C4H6+O2).I choose couple solver, finate-rate model.I define Cp of mixture as const (value 5500). I get a strange effect of the temperature rise in the core of the flame all the way up to maximum value specified in the Solution Limits panel (whichever value is entered). And the temperature in the fluid zone out of flame zone is very very low(limited to 1K).Would you like to tell me how to solve it?Thank you.

2. I want to define Cp as function of temperature.If you know Cp(T)of C4H6,Would you like to tell me? Thank you.

Any answner will be welcome.Thank you.

Devy 2001.3.23

  Reply With Quote
Sponsored Links

Old   April 3, 2001, 22:28
Default Re: about temperature rising in fluent5.4.8
Harry Qiu
Posts: n/a
Hi, Four points(personal ideas) 1. are you sure that cp of c4h6 is 5500? 2. define correct conductivity coefficient, mass diffusion coefficient and so on for mixture; 3. better initial temperature value; 4 less ignition area. Harry.
  Reply With Quote

Old   April 4, 2001, 11:32
Default Re: about temperature rising in fluent5.4.8
Posts: n/a
Hi Devy,

Please find some additional discussion on this issue in "temperature rise in combustion simulation" thread


  Reply With Quote


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
Problem with zeroGradient wall BC for temperature - Total temperature loss cboss OpenFOAM 10 March 5, 2015 07:57
Calculation of the Governing Equations Mihail CFX 7 September 7, 2014 06:27
Pressure rising with temperature Koranten FLUENT 0 August 19, 2009 05:57
about temperature rising in fluent5.4.8 Devy FLUENT 1 July 9, 2001 11:08
about temperature rising in fluent5.4.8 Devy FLUENT 2 April 9, 2001 07:05

Sponsored Links

All times are GMT -4. The time now is 11:59.