Download Bernoulli`s Principle

Bernoulli’s Principle
For a fluid traveling // to a surface:
LIQUID
OR GAS …FAST-moving fluids exert LOW pressure
…SLOW-
“
“
“
HIGH
FAST
LOW P
roof in hurricane
SLOW
HIGH P
FAST
LOW P
SLOW
“
HIGH P
airplane wing / helicopter propeller
FAST
LOW P
SLOW
HIGH P
frisbee
AIR
PARTICLES
Resulting
Forces
(BERNOULLI’S
PRINCIPLE)
(GRAVITY)
Bernoulli’s Principle
Faster moving air on top  less air pressure
Low Pressure
High Pressure
LIFT
Slower moving air on bottom  high air pressure
Air moves from HIGH pressure to LOW pressure
Bernoulli’s Principle
Fast moving fluid exerts low pressure. Slow moving fluid exerts high pressure.
Fluids move from concentrations of high to low concentration.
LIFT
AIR FOIL (WING)
Pressure exerted by slower moving air
"Creeping" Shower Curtain
CURTAIN
COLD
WARM
SLOW
FAST
HIGH
Pressure
LOW
Pressure
TALL BUILDING
FAST
LOW P
SLOW
HIGH P
WINDOWS BURST OUTWARDS
windows and high winds (e.g., tornadoes)