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Question 3: As will be discussed in future lectures, the volume rate of flow, Q, through a pipe can be determined by means of a flow nozzle located in the pipe as illustrated in the figure below. The nozzle creates a pressure drop, pA - pB, along the pipe which is related to the flow through the equation Q = K?(pA - pB), where K is a constant depending on the pipe and nozzle size. The pressure drop is frequently measured with a differential U-tube manometer of the type illustrated in the figure. If the specific weight of a fluid is defined as: ? = ?g, where ? is the fluid density and g the acceleration due to gravity: a) Determine an equation for pA - pB in terms of the specific weight of the flowing fluid, ?1, the specific weight of the gage fluid, ?2, and the various heights indicated. b) For ?1 = 9.80 kN/m3, ?2 = 15.6 kN/m3, and h2 = 0.5 m, what is the value of the pressure drop, pA - pB?

          Question 3: As will be discussed in future lectures, the volume rate of flow, Q, through a pipe can be determined by means of a flow nozzle located in the pipe as illustrated in the figure below. The nozzle creates a pressure drop, pA - pB, along the pipe which is related to the flow through the equation Q = K?(pA - pB), where K is a constant depending on the pipe and nozzle size. The pressure drop is frequently measured with a differential U-tube manometer of the type illustrated in the figure. If the specific weight of a fluid is defined as: ? = ?g, where ? is the fluid density and g the acceleration due to gravity:

a) Determine an equation for pA - pB in terms of the specific weight of the flowing fluid, ?1, the specific weight of the gage fluid, ?2, and the various heights indicated.

b) For ?1 = 9.80 kN/m3, ?2 = 15.6 kN/m3, and h2 = 0.5 m, what is the value of the pressure drop, pA - pB?

Question 3: As will be discussed in future lectures, the volume rate of flow, Q, through a pipe can be determined by means of a flow nozzle located in the pipe as illustrated in the figure below. The nozzle creates a pressure drop, pA - pB, along the pipe which is related to the flow through the equation Q = K?(pA - pB), where K is a constant depending on the pipe and nozzle size. The pressure drop is frequently measured with a differential U-tube manometer of the type illustrated in the figure. If the specific weight of a fluid is defined as: ? = ?g, where ? is the fluid density and g the acceleration due to gravity:

a) Determine an equation for pA - pB in terms of the specific weight of the flowing fluid, ?1, the specific weight of the gage fluid, ?2, and the various heights indicated.

b) For ?1 = 9.80 kN/m3, ?2 = 15.6 kN/m3, and h2 = 0.5 m, what is the value of the pressure drop, pA - pB?

Added by Jeffrey M.

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