Consider flow from a water reservoir through a circular hole of diameter D=0.09 m at the sidewall at a vertical distance H from the free surface. The flow rate through an actual hole with a sharp-edged entrance is K1, 0.52 which is considerably less than the flow rate calculated assuming "frictionless" flow and thus zero loss for the hole. Obtain a relation for the "equivalent diameter" of the sharp-edged hole for use in frictionless flow relations. Show your result in 3 decimal places. Dequiv D - Frictionless flow Actual flow
Fluid Pressure
The term fluid pressure is coined as, the measurement of the force per unit area of a given surface of a closed container. It is a branch of physics that helps to study the properties of fluid under various conditions of force.
Gauge Pressure
Pressure is the physical force acting per unit area on a body; the applied force is perpendicular to the surface of the object per unit area. The air around us at sea level exerts a pressure (atmospheric pressure) of about 14.7 psi but this doesn’t seem to bother anyone as the bodily fluids are constantly pushing outwards with the same force but if one swims down into the ocean a few feet below the surface one can notice the difference, there is increased pressure on the eardrum, this is due to an increase in hydrostatic pressure.
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