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

Re: effective? turbulent? laminar? viscosity
 

I think you have to use laminar viscosity.

Re: effective? turbulent? laminar? viscosity
 

Dynamic viscosity with units of kg/m.s

DAE

Re: effective? turbulent? laminar? viscosity
 

effective dynamic viscosity for the carrier fluid