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Fluid Mechanics: Pressure


Pressure is another important aspect of fluid mechanics, and is one of the elements normally calculated in a fluids problem. Pressure can be expressed in two different ways. It can be expressed as gage pressure, and absolute pressure. Gage pressure is a pressure measurement that doesn't take in consideration of atmospheric pressure, while absolute pressure includes atmospheric pressure. Refer to equation 1.

Relationship between gage and absolute equation (1)

Atmospheric pressure at sea level is 101 kpa in SI units and 14.7psi in English units.

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