Studied by 22 peopleThis flashcard contains formulas, conversion units, constants, etc.
Two formula for Mass Density
ρ = M / V
ρ = P / RT
Two values of Gas Constant, R
R = 1716 (lb-ft / slug-R)
R = 287 (J / kg-K)
Kelvin - Celsius Formula
K = C + 273
Rankine - Fahrenheit Formula
R = F + 460
Celsius - Fahrenheit Formula
C(9/5) = (F-32)
Specific Volume, Vs
Vs = 1 / Rho(p)
Unit Weight / Specific Weight Formula, γ
γ = W / V
γ = ρg
Specific Gravity, s
s = ρ(liquid) / ρ(water)
s = γ(liquid) / γ(water)
Density and Unit Weight of water
ρ = 1.94 slug/ft³
ρ = 1000 kg/m³
γ = 9.81 kN/m³
γ = 62.4 lb/ft³
Viscosity, μ
μ = τ / (dU/dy)
Kinematic Viscosity, ν
ν = μ / ρ
Surface Tension or Pressure inside a droplet, P
P = 4σ / d
Capillary
h = 4σ(cosθ) / γd
Compressibility
β = - (dV / Vi ) / dP
Bulk Modulus of Elasticity
Eb = - dP / (dV / Vi)
Bulk Modulus of Elasticity of Water
Eb = 2.2 GPa
Pressure Disturbance
c = √( Eb / ρ )
Gas Laws Formula
(P1V1) / T1 = (P2V2) / T2
Boyle’s Law & Charle’s Law (Isothermal)
P1V1 = P2V2
V1/T1 = V2/T2
Isentropic Formula
P1(V1)^k = P2(V2)^k
T2/T1 = (P2/P1)^(k-1 / k)
where: T must be expressed in Kelvin
Capillarity Angle of Water-Glass
0 degrees
note: ethyl alcohol - glass is also 0 degrees
Capillarity Angle of Mercury-Glass
140 degrees
Pressure Units
1 atm = 101325 Pa = 760mmHg
1mmHg = 1 torr
1 bar = 100,000 Pa
Formula for Absolute Pressure
Pabs = Pgage + Patm
Common unit of Viscosity
1 poise = 1 dyne*s / cm² = 0.1 Pa-sec
1 stoke = 0.0001 m²
1 dyne = 10^-5 N
Specific Gravity of Mercury
13.60
Specific Gravity of Sea Water
1.03
Specific Gravity of Ice
0.92
Adiabatic Index of Hydrogen
1.4
Adiabatic Index of Argon
5/3
Adiabatic Index of Nitrogen
1.4
Adiabatic Index of Oxygen
1.4
Adiabatic Index of Helium
5/3
1 gallon is equal to how many liters?
1 gallon = 3.785 liters
1 slug is equal to how many kg?
1 slug = 14.59 kg
m³ to ft³ conversion
(1m / 3.28ft)³
Note
Flashcard