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FLUID MECHANIC - Coggle Diagram
FLUID MECHANIC
Pressure in Fluids
Pressure
1 Pa = 1N/m^2
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Pressure is the same in every direction in a static fluid at a given depth; if it were not, the fluid would flow.
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If there is external pressure in addition to the weight of the fluid itself, or if the density of the fluid is not constant, we calculate the pressure at a height y in the fluid; the negative sign indicates that the pressure decreases with height (increases with depth):
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Applications of Bernoulli’s Principle: Torricelli, Airplanes, Baseballs, TIA
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Lift on an airplane wing is due to the different air speeds and pressures on the two surfaces of the wing.
A sailboat can move against the wind, using the pressure differences on each side of the sail, and using the keel to keep from going sideways.
A sailboat can move against the wind, using the pressure differences on each side of the sail, and using the keel to keep from going sideways.
A person with constricted arteries may experience a temporary lack of blood to the brain (TIA) as blood speeds up to get past the constriction, thereby reducing the pressure.
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Pascal’s Principle
If an external pressure is applied to a confined fluid, the pressure at every point within the fluid increases by that amount.
This principle is used, for example, in hydraulic lifts and hydraulic brakes.
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Phases of Matter
-Solid has fixed shape and volume
-Liquid has fixed volume but can change shape
-Gas can change shape and compress its volume
-All that flow if fluid(Gas and Liquid)