CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > ANSYS > FLUENT


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

LinkBack Thread Tools Display Modes
Old   March 2, 2006, 03:33
Default enthalpy
Posts: n/a
Hi, I would like adding source in energy eguation. My source is S = Cp*dh/dx, where cp is specific heat, dh/dx is derivation enthalpy. How introduce derivation enthalpy to Fluent. When I writing in my udf derivation enthalpy is C_H_G(c,t) [I set: Keep temporary solver memory from being freed? [yes] ] fluent received fatal signal (ACCESS_VIOLATION)...

Please help me!!! Best regards Tomik.

  Reply With Quote

Old   March 4, 2006, 12:13
Default Re: enthalpy
Posts: n/a
Could be a lot of things....

1) Are you using in the same time an adaptaive mesh method based on the gradient ? if yes switch it off, and try again.

2) If Cp is constant, you can use instead C_T_G(c,t) see if it works....

for more details, please show you UDF source....
  Reply With Quote

Old   March 7, 2006, 06:34
Default Re: enthalpy
Posts: n/a
Thanks for your suggestions. In my case specific heat is function temperature. How switch off adaptative mesh method??? Where is this setting? Can you explain me exlactly?

Best regards Tomik.
  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
deriviation enthalpy Tomik FLUENT 0 March 14, 2006 12:49
derivation enthalpy Tomik FLUENT 2 March 9, 2006 16:39
no enthalpy change across the momentum source Atit Koonsrisuk CFX 2 December 19, 2005 03:33
meaning static enthalpy and total enthalpy mspark Siemens 1 April 1, 2004 06:20
Stagnation enthalpy vs. static enthalpy? BK Siemens 2 March 3, 2004 22:29

All times are GMT -4. The time now is 21:33.