FLUID MECHANICS Flashcards
an object submerged in a fluid experiences an upward force due to the fluid.
bouyant force
states that the bouyant force experienced
by an object submerged in a fluid is equal to the weight of the fluid displaced by the object
Archimedes’ Principle
what is the symbol of bouyant force
Fb
the bouyant force also depends on the density of the fluid—
the denser the fluid, the higher the bouyant force
the mass reading when not submerged
the actual mass of the object or mass in ____
air (m)air
the mass reading when submerged in liquid teh reduced mass of the object or mass ____
fluid (m)f
formula of weight loss
w loss = (mair - mf)
2 kinds of flow
laminar flow
turbulent flow
neighboring layers of fluid follow an orderly flow; streamlines do not cross each other
laminar flow
disordered flow
turbulent flow
3 characteristics of ideal fluids
laminar
non-viscous
incompressible
it is a non-turbulent flow
laminar
no dissipation of mechanical energy; no resistance to flow
non-viscous
density is constant and uniform throughout the fluid
incompressible
since the fluid is incompressible, the same amount of fluid leaves each point for a given _______
time interval
the volume of the fluid flowing into a pipe or a tube within a time interval is called the _______
volume flow rate (Q)
states that the sum of the pressure, kinetic energy per unit volume, and potential energy per unit volume is the same in any region
Bernouilli’s Principle
increased fluid velocity means
lower pressure
these are liquids and gases
fluids
what kind of phenomenon can be explained when a water spraying at the end of the hose increases in speed as the size of the hole decreases using the thumb
Bernoulli’s Principle
