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Unformatted text preview: An Example of Averaging Parameters 1 Air and water flow at high pressure (about 80 atmospheres) in a round tube. A slug flow forms. The geometry cylindrical slugs of gas along the centerline, liquid everywhere else is shown below. Assume upflow as shown. Assume a single gas velocity and a single liquid velocity apply everywhere. Diameter: 0.01 m Diameter: 0.0071 m 0.02 m 0.08 m Given the following (take phase densities as constants and mass flow rates as time averages). g = 100 kg m 3 (1) f = 1000 kg m 3 (2) m g = 0 . 005 kg s 1 (3) m f = 0 . 05 kg s 1 (4) Assume the gas slugs are coherent, periodic structures they all travel at the same speed and keep constant distance between one another. Compute the following: 1. Compute the timeaveraged flow quality, x . x = m g m f + m g (5) x = . 005 . 05 + 0 . 005 (6) x = 0 . 0909 (7) 2. Compute the timeaverage superficial velocities, { j f } and { j g } ....
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This note was uploaded on 10/22/2011 for the course ENU 4134 taught by Professor Schubring during the Fall '11 term at University of Florida.
 Fall '11
 Schubring

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