FORMULAS FOR FLUID MECHANICS Flashcards
1
Q
Mass Density
A
ρ = M/V
2
Q
Density for ideal gas
A
ρ = P/RT
3
Q
What is R?
A
gas constant
4
Q
Values of R
A
287 j/kg K
1716 lb ft/slug R
5
Q
Kelvin=
A
C + 273
6
Q
Rankine=
A
F + 460
7
Q
Specific Volume
A
Vs = 1/ρ =V/M
8
Q
Unit weight
A
γ =W/V = ρg
9
Q
Specific Gravity
A
Sg= P(liquid or gas)/P(water or air)
10
Q
Values for the unit weight of water
A
62.4 lb/ft^3
9.81 kN/m^3
11
Q
Values for Density of water
A
1.94 slugs/ft^3
1000 kg/m^3
12
Q
Specific gravity of water
A
1
13
Q
Viscosity
A
µ = τ/(dv/dy)
14
Q
Kinematic Viscosity
A
V = µ/P
15
Q
Surface tension (pressure inside a droplet of liquid)
A
P = (4σ)/d
