CFD Online Logo CFD Online URL
Home > Forums > CFX

User_getvar question

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

LinkBack Thread Tools Display Modes
Old   December 12, 2003, 06:08
Default User_getvar question
Posts: n/a
I am using user_getvar to obtain velocity gradients for a FORTRAN subroutine.

As far as I have understood, I can only request whole vector and tensor entities from user_getvar, and not components of these. My question is: How do I get the correct gradients out of the tensor?

I can request the gradient tensor successfully, and store it in a stack_point without troubles. But I am not sure I am using the correct notation for getting the components of the gradient tensor. I am currently getting the components with calls like this:


Where Grad_W is the requested gradient tensor from user_getvar. Now I suppose that the first number in the brackets express the gradient (i.e. 1 is d/dx, 2 is d/dy, 3 is d/dz), ILOC is refering to the node number (I am doing computations in the whole domain), and that the last number corresponds to the component (i.e. 1 is u, 2 is v, 3 is w). If I follow this notation, the above expression would give me du/dy. Can anybody who have worked with this tell me if this is correct?

Thanks in advance, Jesper.
  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
Unanswered question niklas OpenFOAM 2 July 31, 2013 16:03
internal field question - PitzDaily Case atareen64 OpenFOAM Running, Solving & CFD 2 January 26, 2011 16:26
Question about Table applicaiton. universez OpenFOAM Running, Solving & CFD 0 January 12, 2010 21:31
CHANNEL FLOW: a question and a request Carlos Main CFD Forum 4 August 23, 2002 05:55
question K.L.Huang Siemens 1 March 29, 2000 04:57

All times are GMT -4. The time now is 16:28.