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

shear rate on a section

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   January 11, 2005, 13:13
Default shear rate on a section
  #1
Stephane bone
Guest
 
Posts: n/a
Hi,

I would like to know local shear rates on a section.

I create my section with : spoint/snormal pscreate

then, I use pmap for su.

I have su in register 4

then, I use Caverage all and oper, gradient, no

I obtain a result.

However, if I push Update List in Post Register Date, everything is set to 0 and I don't how to have once again these results.

I have two questions : 1 - Is it really possible to obtain a gradient after a pmap command? 2 - If not, how can I obtain values of shear rates on a section without using cset newset grange?

At the final state, I would like to obtain gradients in register 1 2 3 and x, y and z in register 4 5 and 6.

Thanks for your help.

Stephane
  Reply With Quote

Old   January 12, 2005, 04:33
Default Re: shear rate on a section
  #2
Stephane bone
Guest
 
Posts: n/a
I think I have just found the answer :

First, we have to create the section and the shells on it with spoint, snormal and pscreate.

Then, we load cell values of u scalar in the 4th register for the whole geometry. Then we use caverage all to obtain vertex values and oper gradient no to obtain dudx, dudy and dudz in register 1 2 and 3

Then, we use pmap (with Table number for shells)

By using cset newset type (table number for shells), vset newset cset and oper getc x 1 4, oper getc y...

We obtain dudx, dudy and dudz in register 1 2 and 3 and x y and z in register 4 5 and 6

Stephane
  Reply With Quote

Reply


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
CFX:getting mass flow rate across a cross section allamaprabhu CFX 1 February 14, 2006 13:07
shear rate calculation Stephane bone Siemens 2 January 7, 2005 12:34
mass flow rate at different cross section !! Nyquist Siemens 7 September 15, 2003 13:13
How to get volume flow rate of a section? Nyquist Siemens 1 September 14, 2003 01:27
Shear strain rate(Sij) Jay Main CFD Forum 4 November 20, 2002 06:45


All times are GMT -4. The time now is 16:45.