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

Fluent reaction- udf problem? help

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

Reply
 
LinkBack Thread Tools Display Modes
Old   November 11, 2008, 04:35
Default Fluent reaction- udf problem? help
  #1
owen
Guest
 
Posts: n/a
Fluent reaction- udf problem? I have defined a surface reaction by my udf(it is different from the arrhenius rate) ,and have hooked it in the fluent. But I can't find any change in the reaction panel,that is to say I can't find the reaction rate just defined, there is only a arrhenius reaction rate. 1.Does it has adopt the user defined reation by default or is my mistake? 2.If it has adoptde the udf's rate by default ,then how can I set up the stoich coefficient or there is no need to set up it at all?

Thans in advance !

  Reply With Quote

Old   November 11, 2008, 07:07
Default Re: Fluent reaction- udf problem? help
  #2
owen
Guest
 
Posts: n/a
who can help me
  Reply With Quote

Old   November 12, 2008, 10:15
Default Re: Fluent reaction- udf problem? help
  #3
sathees kannan
Guest
 
Posts: n/a
once you have hooked your UDF, then Fluent will take the reaction rate passed by your UDF, it will overwrite the Arrhenius rate passed. If you have hooked in "User Defined Function Hooks" panel, that is enough. Fluent will pass the Stoichiometric Co-eff. which you gave in reaction panel, concentratino of each species to your UDF, thus your UDF will calculate rate of reaction and will return it to Fluent.

Am I answered you.? Best of Luck
  Reply With Quote

Old   November 12, 2008, 21:31
Default Re: Fluent reaction- udf problem? help
  #4
owen
Guest
 
Posts: n/a
Thank you very much!

I will try!
  Reply With Quote

Old   November 18, 2008, 12:42
Default free jet plow profile
  #5
Virendra Kumar
Guest
 
Posts: n/a
hi sir, i am m.tech student. i am doing my project in fluent. i have my problem regarding "free jet flow problem". i am unable to get flow profile through jet flow in environment in the fluent software. if any body help please reply soon. i am very thankful to u.
  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
chemical reaction problem Benoit FLUENT 2 March 14, 2013 15:56
surface Reaction in Fluent through UDF Hamis Jumanne Fluent UDF and Scheme Programming 1 July 2, 2012 07:47
Fluent reaction problem? Help zheheng FLUENT 1 December 6, 2008 05:29
reaction problem babak FLUENT 3 November 11, 2006 14:16
Plz help! I can't express this reaction in fluent chang,antony FLUENT 0 September 8, 2002 03:31


All times are GMT -4. The time now is 05:43.