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-   -   effective? turbulent? laminar? viscosity (http://www.cfd-online.com/Forums/fluent/30593-effective-turbulent-laminar-viscosity.html)

MIssNancy November 29, 2002 18:26

effective? turbulent? laminar? viscosity
 
Guys, I have got two stupid questions for you :) 1) In the famous drag-particle reynoulds number: Cd=Rep/24(1+0.15*Rep^2/3); for which Rep=dp*Ur*rho/mu; now my question is, to determine the particle Reynoulds number, what type of fluid viscosity do I have to use (effective? turbulent? laminar? viscosity?) 2) In the Saffman Lift Force, there is a viscosity (or kinematice viscosity),what type of viscosity do I have to use here (effective? turbulent? laminar? viscosity?)

Nancy

joy123 November 30, 2002 11:14

Re: effective? turbulent? laminar? viscosity
 
I think you have to use laminar viscosity.

Darrell Anthony Egarr December 2, 2002 05:10

Re: effective? turbulent? laminar? viscosity
 
Dynamic viscosity with units of kg/m.s

DAE

Alamgir December 3, 2002 00:53

Re: effective? turbulent? laminar? viscosity
 
effective dynamic viscosity for the carrier fluid


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