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

Reynold Stress Tensor

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

Reply
 
LinkBack Thread Tools Display Modes
Old   April 30, 2009, 12:38
Default Reynold Stress Tensor
  #1
Senior Member
 
Ivan Flaminio Cozza
Join Date: Mar 2009
Location: Torino, Piemonte, Italia
Posts: 207
Rep Power: 8
ivan_cozza is on a distinguished road
Send a message via MSN to ivan_cozza
Hi Foamers,
I have to diagonalize the R tensor, so I tryed to evaluate the eigenvalues and eigenvectors, like this:

volSymmTensorField RST
(
IOobject
(
"RST",
runTime.timeName(),
mesh,
IOobject::NO_READ,
IOobject::NO_WRITE
),
turbulence->R()
);

Info<< "Inizio op Tensori\n" << endl;

volTensorField eigR = RST.eigenVectors();
volTensorField diagR = transform( transform(inv(eigR),RST) , eigR );

Info<< "Fine op Tensori\n" << endl;

but it tell me that there's no eigenVectors function for volSymmTensorField.
Any suggestion?
Thanks
ivan_cozza is offline   Reply With Quote

Old   May 4, 2009, 12:35
Default
  #2
Senior Member
 
Ivan Flaminio Cozza
Join Date: Mar 2009
Location: Torino, Piemonte, Italia
Posts: 207
Rep Power: 8
ivan_cozza is on a distinguished road
Send a message via MSN to ivan_cozza
And, moreover,
the function eigenVectors() returns the eigenvectors tensor, but is not clear for me if it put the eigenvectors in the coluns or in the rows.
Anybody knows it?
Ivan
ivan_cozza 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


Similar Threads
Thread Thread Starter Forum Replies Last Post
How to modify the stress tensor of momentum eqns. Jason FLUENT 1 November 26, 2010 05:20
reynold stress model yasir FLUENT 0 August 16, 2004 08:51
about Reynold stress in Momentun eqn. sagga FLUENT 0 August 16, 2004 03:19
Stress tensor components ap FLUENT 0 February 26, 2004 12:16
Reynold stress equation mukkarumhussain Main CFD Forum 9 August 7, 2002 03:18


All times are GMT -4. The time now is 15:43.