friction factor उदाहरण वाक्य

Of the two, the Fanning friction factor is the more commonly used by chemical engineers and those following the British convention.
The mean wall shear stress in a pipe or open channel is expressed in terms of the Darcy Weisbach friction factor as:
I think I can find out what I want using that and the darcy friction factor formula, but I'm not entirely sure how.
in which \ rho is the density of air in the shaft or roadway under consideration and f is Fanning friction factor ( dimensionless ).
Relative roughness is not a parameter in any of the equations because the friction factor of Bingham plastic fluids is not sensitive to pipe roughness.

where f is the Darcy friction factor that can either be obtained from the Moody chart or for smooth tubes from correlation developed by Petukhov:
Moody diagram showing the Darcy-Weisbach friction factor " f " " D " plotted against Reynolds number Re for various relative roughness ? / " D"
What I call friction factors are some negative characteristics normally associated with geniuses who are under a lot of pressure, or people who are just obnoxious.
One must keep in mind, however, that the value of the Fanning friction factor can be difficult to determine for supersonic and especially hypersonic flow velocities.
where q _ s * is the Einstein nondimensionalization for sediment volumetric discharge per unit width, c _ f is a friction factor, and \ tau * is the Shields stress.