Chapter 1-2 Flashcards
fluid
any substance that deforms continuously when acted upon shear stress of any magnitude
reheology
two phase mixture: steam and water mixture
critical point
The temperature and pressure above which a supercritical fluid exists
critical pressure
The pressure required to bring about a transition to a liquid at the critical temperature
supercritical fluid
a point in a phase diagram where the highly compressed gases which combine properties of gases and liquids in an intriguing manner
critical temperature
The temperature above which a liquid cannot exist, regardless of pressure
formula for density
mass/volume
continuum hypothesis
the theory that density is constant until it approached a small number or almost constant even at 1 mm^3 volume which is much larger than the average distance between molecules
mean free path
the average distance between molecules before it collides with another molecule
formula for mean free path
density = C(m/(pd^2))
m = mass of molecule
d = diameter
p = gas density
density
a measure of a fluid’s mass concentration
What are the SI units for density?
k/m^3
specific weight
weight per unit volume
formula for specific weight
weight = mass x gravity
if a fluid’s specific gravity is greater than 1,
the fluid is denser than water
