Introduction Flashcards
(19 cards)
“Fluid at rest”
fluid statics
Changes in density are significant
compressible
Momentum Transfer
fluid dynamics
changes only slightly with moderate changes in Temperature and Pressure
incompressible
it is defined to be the exerted force by a fluid against the walls of its container
pressure
At a given Temperature and Pressure, a fluid possesses a?
definite density
portions of fluid are in motion relative to the other parts
fluid dynamics
fluids in equilibrium; state of no shear
fluid statics
it is the continuous distribution of matter
continuum
A substance that does not permanently resist distortion, hence, changing its shape
fluid mechanics
Study of the relationship of
mass, forces and motion
fluid mechanics
Physical Properties of Fluids:
- Density or relative density
- Viscosity
- Surface Tension
changing these two variables, may have small/large variation on the fluid density
temperature and pressure
types of stresses that we deal with in fluid mechanics
- confining stress
- compressional stress
- shear stress
This stress is typically exerted by surrounding materials or fluids and affects how the material deforms and behaves under additional loads
confining stress
it is a force per unit area that acts uniformly in all directions in a fluid
compressional stress
it is the stress that occurs when adjacent layers of fluid move relative to each other, causing internal friction
shear stress
the pressure is constant in
any cross section parallel to
earth’s surface but varies from
height to height
hydrostatic equilibrium
