This paper describes a new and efficient model for the study of air entrainment effects on the responses of a typical horizontal air vessel. The effects of air entrainment on the pressure surges for unsteady flow in a pipeline system were investigated. Studies showed that entrained, entrapped, or released gases in the transient fluid system tend to amplify the first pressure peak, increase surge damping, and produce asymmetric pressure surges with respect to the static head. The pressure surges showed longer periods of down-surge and shorter periods of upsurge. The upsurge was considerably amplified and down-surge was marginally reduced when compared with the gas-free case. With the horizontal air vessel installed, studies showed that the effects of air entrainment on the maximum transient pressure can be considerably reduced with an appropriately configured air vessel. [S0098-2202(00)00203-0]
Effects of Air Entrainment on the Ability of Air Vessels in the Pressure Surge Suppressions
Contributed by the Fluids Engineering Division for publication in the JOURNAL OF FLUIDS ENGINEERING. Manuscript received by the Fluids Engineering Division April 8, 1999; revised manuscript received March 10, 2000. Associate Technical Editor: J. Katz.
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Lee, T. S. (March 10, 2000). "Effects of Air Entrainment on the Ability of Air Vessels in the Pressure Surge Suppressions ." ASME. J. Fluids Eng. September 2000; 122(3): 499–504. https://doi.org/10.1115/1.1286992
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