On air entrainment in a water pool by impingement of a jet |
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Authors: | Vatsal Sanjay Arup Kumar Das |
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Affiliation: | Dept. of Mechanical and Industrial Engineering, Indian Institute of Technology, Roorkee, Uttarakhand, India |
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Abstract: | Air entrainment due to impingement of a water jet on a pool is studied extensively to understand the physics of the initiation and the cluster of bubbles formed below the free surface. Possible outcomes due to the jet impingement in a pool have been identified as smooth free surface without entrainment or formation of rigorous bubble cluster below the jet‐pool contact. Triangular entrained region is found to be a three‐dimensional association of disconnected bubble population continuously breaking and making with the neighbors. A correlation for prediction of maximum entrained height for a range of jet diameters and lengths is proposed. The trajectory of a single bubble is also studied to understand the kinematics of the bubble cluster. Alongside, an electrical conductivity probe has been used to examine the probabilistic presence of the bubble at a given depth in the liquid pool. © 2017 American Institute of Chemical Engineers AIChE J, 2017 |
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Keywords: | entrainment jet‐pool interaction interface dynamics |
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