Momentum Flashcards
1
Q
Define a control volume
A
an imaginary surface enclosing a volume of interest, can be fixed or moving
2
Q
Using Newton’s third law what is the equation for force exerted on a fluid
A
F = ṁ(v2 - v1)
ṁ = mass flow rate
ΔV = change in velocity
3
Q
Equation for mass flow rate
A
ṁ = ρ A v
ρ = density
A = area
v = velocity
