Week 2 Flashcards
1
Q
Internal pressure require to overcome surface tension, for droplets
A
p = 2 σ / r
2
Q
Convert 1 poise
A
0.1 Pa s
3
Q
Calculate bulk modulus for a substance
A
Same as youngs
= Δp / (ΔV / V)
4
Q
Calculate kinematic viscosity
A
μ/ρ
5
Q
Define vapour pressure
A
The pressure of the gas in a confined area when both the liquid and gas are at equilibrium
6
Q
When does cavitation occur in flowing fluids
A
When the local pressure falls below the vapour pressure
7
Q
Define absolute pressure
A
Gage + atmospheric pressure
