McMullan Flashcards
What is a fluid?
A matter that deforms continuously under the action of a shear stress
What is a property of a closed system?
Mass is not allowed to cross the boundaries
What is a property of an open system?
Mass and energy are allowed to cross the boundaries
What is a property of an isolated system?
No mass or energy can cross boundaries
What does intensive mean?
Independent of the size of the system
What does extensive mean?
Dependent on the extent of the system
What is the specific volume? Equation?
The volume occupied per unit mass
SV = V/ m
V = volume
m = mass
What is the equation for relative density?
Density fluid/ Density water
What is an inviscid flow?
Idealised and have zero viscosity
What is visocus flow?
All real flows are viscous
What is the equation for the bulk modulus of elasticity?
K = -V /\P/ /\V
What is the equation for viscous stress?
U.du/ dy
U(mu) = constant of proportionality
du/ dy = rate of strain
What is the kinematic viscosity equal to? Equation?
Ratio of dynamic viscosity and density
U(mu)/ Density
What is the equation for the (friction) force acting on a system?
Viscous stress x Area
What is the absolute pressure?
The pressure at the point relative to absolute vaccum
