GEO CO5 (hopes and prayers)

FLUID MECHANICS

is the branch of physics

that studies fluids at rest (fluid statics)

and fluids in motion (fluid dynamics).

FLUIDS

include liquids and gases.

● Key fluid properties: density (ρ), pressure

(P), buoyancy, and viscosity.

DENSITY

● Describes how compact a substance is.

PRESSURE IN FLUIDS

● Pressure increases with depth:

● Used in barometer problems.

PASCALS PRINCIPLE

● Pressure applied to an enclosed fluid is

transmitted undiminished in all directions.

● Used in hydraulic lifts.

Steady Flow

velocity is constant at each

point.

Unsteady Flow

velocity changes over

time.

Turbulent Flow

chaotic flow.

Laminar Flow

smooth flow.

Compressible

density changes (gases).

Viscosity

Measures a fluid’s “thickness” or resistance

to flow.