Water at 20oC flows through a long elliptical duct 30 cm wide and 22 cm high. What average velocity, in m/s, would cause the weight flow to be 500 lbf/s?

Explanation:

The given data is as follows.

   Fluid is water so, density

  Weight flow rate = 500 lbf/s = 2224.11 N/sec

  Cross-sectional area (A) =

                                         = 0.05184

Hence, weight flow rate will be given as follows.

        w =

    2224.11 N/sec =

        V = m/s

            = 4.373 m/s

Thus, we can conclude that average velocity in the given case is 4.373 m/s.

it is called kinetic energy

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