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Positive or negetive????

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Old   September 9, 2013, 10:16
Default Positive or negetive????
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mohsen kh
Join Date: Jan 2013
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Hi dear Foamers
I added the energy equation to porousSimpleFoam
I also found F and D.see following link

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
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