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pranab_jha July 15, 2011 10:18

Reynolds number
 
Is the "Cell Reynold's number" same as actual Reynolds number (say in case of a pipe, based of pipe diameter). Which value should be used to determine if the flow is laminar or turbulent?

Amir July 15, 2011 11:20

Quote:

Originally Posted by pranab_jha (Post 316258)
Is the "Cell Reynold's number" same as actual Reynolds number (say in case of a pipe, based of pipe diameter). Which value should be used to determine if the flow is laminar or turbulent?

Not at all, the length scale is different; in addition, the velocity of each cell is considered as velocity scale.
Cell Reynold's number is used for some numeric algorithms. (peclet No. )

A.D.E July 20, 2011 10:59

The cell Reynolds number is based on the local characteristics and in not the same as the flow Re!


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