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

Accessing C_DUDX

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

LinkBack Thread Tools Search this Thread Display Modes
Old   June 30, 2005, 04:54
Default Accessing C_DUDX
Posts: n/a
Hi All,

I'm trying to access C_DUDX, C_DUDY, etc from within a UDF. I have worked out that if I try to use these macros straight after loading a case all I get is 0.0, but if I provoke Fluent into using the velocity derivative through the GUI (i.e. by clicking 'calculate' in the contour plot menu with dx-velocity/dx selected) then I get useful values.

Does anybody know how I can provoke Fluent to determine these values without me having to intervene through the GUI?

Also, does anybody know how C_DUDX and D_U_G[0] differ?


  Reply With Quote


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
Why does accessing a zeroGradient patch return (0 0 0) for a volVectorField l_r_mcglashan OpenFOAM 0 August 20, 2010 13:27
Accessing node values using a UDF Nico FLUENT 2 December 20, 2007 02:50
How to define a Macro accessing rad intensity Grey FLUENT 0 May 21, 2007 00:12
Accessing Solver data for UDF CFDtoy FLUENT 7 April 13, 2006 16:52
Problem accessing Temp. Gradient . . . Satish FLUENT 16 December 16, 2003 13:44

All times are GMT -4. The time now is 17:49.