Topic 6 Flashcards
1
Q
What is a viscous drag force?
A
A force that tries to retard and object in a flow
2
Q
Equation to calculate viscous drag
A
Fd ~ vη
3
Q
Give the Equation of Stoke’s Law
A
For a sphere:
Fd = 6πRηv
4
Q
Equation to calculate the terminal velocity of a small particle falling in a viscous fluid.
A
vT = 2/9R2/ηg(ρ-ρO)
5
Q
Terminal veloicty of an object falling in a viscous fluid is highly dependent on…
A
The Object’s Radius
6
Q
Equation to calculate viscosity in a Höppler’s Viscometer
A
η = K(ρ-ρO)t
7
Q
Hessler’s Viscometer is based on…
A
The Poiseuille Law
(Vwater/Vblood = ηblood/ηwater)
8
Q
Hesslers’ Viscometer fucntions by…
A
Two capillaries suck two different fluids.
Ratio of the the fluids is made.
