Consider the Venturi meter, discussed in the sample problems, containing water without the manometer tube underneath. Let A = 4.75a. Suppose that the pressure at point 1 is 2.12 atmosphere. (a) Compute the values of v at point 1 and at point 2 that would make the pressure at point 2 equal to zero. (b) How much water in m3 flows into the tube per minute (the volume flow rate in minutes) if the diameter at point 1 is 5.20 cm. The phenomenon at point 2 when the pressure falls to nearly zero is known as cavitation. The water vaporizes into small bubbles
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.
Consider the Venturi meter, discussed in the sample problems, containing water without the manometer tube underneath. Let A = 4.75a. Suppose that the pressure at point 1 is 2.12 atmosphere.
(a) Compute the values of v at point 1 and at point 2 that would make the pressure at point 2 equal to zero.
(b) How much water in m3 flows into the tube per minute (the volume flow rate in minutes) if the diameter at point 1 is 5.20 cm. The phenomenon at point 2 when the pressure falls to nearly zero is known as cavitation. The water vaporizes into small bubbles.
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