CFD Online Discussion Forums

CFD Online Discussion Forums (https://www.cfd-online.com/Forums/)

- FLUENT (https://www.cfd-online.com/Forums/fluent/)

- - Reynolds number (https://www.cfd-online.com/Forums/fluent/90611-reynolds-number.html)

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!

All times are GMT -4. The time now is 10:56.