Fluid Mechanics Flashcards
(11 cards)
0
Q
Temperature has what relationship with viscosity?
A
Negative or inverse
1
Q
Density
A
Mass per unit volume
Mass / Volume
2
Q
Upthrust is equal to
A
The weight of the fluid displaced.
3
Q
Upthrust =
A
Fluid volume x Fluid density x Gravitational field strength
4
Q
Laminar flow
A
No mixing of layers
No changes in velocity
Parallel layers
5
Q
Turbulent flow
A
Mixing of layers
Abrupt changes in velocity
Direction changes by more than 90 deg
Eddies are formed
6
Q
Viscous drag always acts…
A
In the opposite direction of movement.
7
Q
Viscous drag =
Of a sphere
A
6pi x Viscosity x Radius x Terminal velocity
8
Q
Equation of falling sphere
A
Sphere weight = Upthrust + VD
9
Q
Equation of rising sphere
A
Sphere weight + VD = Upthrust
10
Q
Weight =
A
Volume x Density x Gravitational field strength
