Chapter 2 Quiz - Fluid Dynamics

example of an extensive property

mass/volume

example of an intensive property

density, temperature

density is inverse to

specific volume

universal gas constant

8.3145 J/mol K

what is continuum flow

a fluid with no gaps in it

specific gravity

the ratio of the density of a substance to the density of a given reference material

compare the units of temperature (c,k,r)

1 R = 5/9 K, K=C+273.15. 0K=0R=-273.15°C

vapor pressure

force exerted by a vapor at phase equilibrium with a liquid at a given temperature

saturated pressure

the pressure at which a phase change takes place at a given temperature

saturated temperature

the temperature at which a phase change takes place at a given pressure

cavitation

bubbles that form at low pressure and implode as their system reaches high pressure

cavitation number

a number your design must not meet, limits cavitation bubbles in design

specific total energy

u + ke + pe

expand: u + ke + pe

u + v²/2 + gz

define enthalpy

amount of heat in a system

enthalpy equation, include final unit

H = U + PV [J]

specific enthalpy equation, include final unit

h = u + pv/ρ [J/kg]

what is flow energy? include its formula

energy contained within a flowing fluid, connected to the idea that a fluid can do work; pv/ρ

specific heats

different amounts of energy if you hold pressure OR volume constant

Cp ___ Cv (>,

Cp > Cv

other word for specific gravity

relative density

other word for specific weight

weight density

what value is vapor pressure equal to?

saturation pressure

flow energy

the energy per unit mass needed to move the fluid and maintain flow