CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > OpenFOAM Running, Solving & CFD

FixedNormalSlip

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

Reply
 
LinkBack Thread Tools Display Modes
Old   August 9, 2007, 05:44
Default anyone knows what the fixedNor
  #1
Member
 
Thomas Jung
Join Date: Mar 2009
Posts: 97
Rep Power: 7
tehache is on a distinguished road
anyone knows what the fixedNormalSlip b.c. does?
I am unable to understand it from the source code...

I am searching for a way to prescribe a tangential shear stress at a surface, and thought maybe this could be something similar.

Thanks for any hint!

Thomas
tehache is offline   Reply With Quote

Old   August 9, 2007, 08:10
Default o.k. still trying to understa
  #2
Member
 
Thomas Jung
Join Date: Mar 2009
Posts: 97
Rep Power: 7
tehache is on a distinguished road
o.k.
still trying to understand these transformations, e.g. in the basicSymmetry b.c...

transform(I-sqr(nHat),internalField)

some hints what that does?

and, generally, is there a difference between simply multiplying a tensor T and a vector v like T dot v, and calling transform(T,v) ?

that would be a great help if I could understand that...

thanks!

Thomas
tehache is offline   Reply With Quote

Old   August 9, 2007, 08:51
Default answering myself ... sorry for
  #3
Member
 
Thomas Jung
Join Date: Mar 2009
Posts: 97
Rep Power: 7
tehache is on a distinguished road
answering myself ... sorry for spamming:

(I-2n*n) dot phi is a mirroring transformation, with respect to plane given by n

transform(T,v) is equivalent to T dot v, but can take different types, correct?
tehache is offline   Reply With Quote

Old   August 9, 2007, 09:12
Default ... taking into account the fa
  #4
Senior Member
 
Hrvoje Jasak
Join Date: Mar 2009
Location: London, England
Posts: 1,730
Rep Power: 20
hjasak will become famous soon enough
... taking into account the fact that the transformation is different, depending on the type tat is being transformed, e.g. a tensor, a symmetric tensor, a scalar etc.

Hrv
__________________
Hrvoje Jasak
Providing commercial FOAM/OpenFOAM and CFD Consulting: http://wikki.co.uk
hjasak is offline   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



All times are GMT -4. The time now is 14:49.