Fluids Under Pressure
9.1
Compress
Squeeze
Compressibility
Hydraulic
liquids
pump
fluids through a system
conductors
pathway to carry fluids
valves
keeps fluid moving at desired time/direction
pressure gauge
monitors pressure within a system
an object that is able to be squeezed into a smaller volume
Pneumatic
air
gases
pump
fluids through a system
conductors
pathway to carry fluids
valves
keep fluid moving at desired time/direction
pressure gauge
monitors pressure within a system
9.5
when liquids are under pressure, their volume decreases as well as a gas
but the decrease in the liquid is barely noticeable
this when using rigid containers
large amount of gas in a small volume and when
more gas particles are added, it creates collisions
causes the temperature to rise which makes the particles of a fluid move faster/farther apart. (fluid expands)
9.4
pressure
force per unit area
P = F/A
1 Pa = 1N/m2
atmospheric pressure
force exerted by the atmosphere
decreases the higher you ascend, because of the less air above you
water
exerts pressure
exerts more pressure than air
air
exerts pressure
Pascal's Law
Blaise Pascal
French mathematician & physicist
states that a force applied to a fluid is distrubuted equally through all parts of the fluid
9.7
the circulatory system is a closed hydraulic system
fluid filled. heart and blood vessels form a sealed
compartment in the body ( closed )
valves
devices that control the movement of a fluid through a
hollow tube or pipe
prevents blood from backing up/pooling in veins
internal combustion engine
a device that provides power by burning fuel
within its cylinders
9.8
we use fluids in every day life work
for example, backhoes
use hydraulic rams
similar to syringes
hoses/fire pumps
used to make fluids leave a system with great force
( under pressure )