EET 293 - Hydraulics and Pneumatics

what is the formula for gamma (γ)?

γ= weight / velocity

γ= density * gravity

γ= specific weight
what does the greek symbol gamma stand for?
γ = specific weight
what is the formula for weight?
w = mass * gravity
what is the formula for force?

Force = mass * acceleration

force = pressure * area
what is the formula for pressure?

pressure = (force) / (area)

pressure = weight / area

pressure = gamma * height
what is specific gravity?

Specific gravity is the ratio of the density of a substance compared to the density (mass of the same unit volume) of a reference substance. Apparent specific gravity is the ratio of the weight of a volume of the substance to the weight of an equal volume of the reference substance. The reference substance is nearly always water for liquids or air for gases
what is the specific gravity formula for hydraulic oil?
SG = γ of oil / γ of water
What is the specific weight of water?
SG _H2O = 62.4 ^lb/_ft3
- SG _H2O = 9800 ^N/_m3
what is "rho"?
Density
what is the formula for density?

ρ = mass / velocity

ρ = gamma / gravity
what is the value of atmospheric pressure?

14.7 psia

0 psig
what is "mu"?

μ = viscosity.

μ _abs= absolute (dynamic) viscosity
what is the unit for absolute (dynamic) viscosity?
μ = pascal-second (Pa·s) (equivalent to N·s/m2, or kg/(m·s))

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sanjer

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EET 293 - Hydraulics and Pneumatics

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EET 293 - Hydraulics and Pneumatics

Updated

2013-04-24T21:48:18Z

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