CFD Online Logo CFD Online URL
Home > Forums > OpenFOAM Pre-Processing

Positive or negetive????

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

LinkBack Thread Tools Display Modes
Old   September 9, 2013, 10:16
Default Positive or negetive????
mohsen kh
Join Date: Jan 2013
Location: Iran
Posts: 88
Rep Power: 5
m5m5kh is on a distinguished road
Hi dear Foamers
I added the energy equation to porousSimpleFoam
I also found F and D.see following link

a,b ,alpha and beta in porousSimpleFom

but there is a problem,when I run my case of study I do not know how to define sign of D and F
these are the T results in second 200 but I don't know which sign should be chosen.
I attach T contours (D+,F-),(D-,F+),(D-,F-) and (D+,F+) respectively.
I hope someone know about this problem.

best regards
Attached Files
File Type: zip (90.5 KB, 5 views)
File Type: zip (33.2 KB, 6 views)
File Type: zip (79.7 KB, 0 views)
File Type: zip (38.2 KB, 3 views)
m5m5kh is offline   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
Poitwise and Fluent, non positive elements filipwa Pointwise & Gridgen 10 November 2, 2010 12:40
Incomplete LU decomposition for positive defined matrices abelme Main CFD Forum 0 November 2, 2010 09:56
Positive Pressure ang negative Pressure moca CFX 3 September 18, 2010 06:00
Eigenvector for the largest positive eigenvalue of the symm( fvc::grad ( U ) ) jaswi OpenFOAM Running, Solving & CFD 1 September 13, 2010 08:43
Testing if matrix is symmetric positive definite Ben Main CFD Forum 4 July 30, 2007 09:28

All times are GMT -4. The time now is 05:00.