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ISSN Online: 2688-7231

ISBN Online: 978-1-56700-524-0

Proceedings of the 26thNational and 4th International ISHMT-ASTFE Heat and Mass Transfer Conference December 17-20, 2021, IIT Madras, Chennai-600036, Tamil Nadu, India
December, 17-20, 2021, IIT Madras, Chennai, India

Film flow and air entrainment around partially submerged rotating roller with a steady flow of air: A numerical approach

Get access DOI: 10.1615/IHMTC-2021.2230
pages 1479-1483

摘要

The present study addresses the detailed physical understanding of fluid flow and gas entrainment around a partially submerged horizontal rotating roller within a liquid pool with an additional effect of horizontal cross-flow of the gaseous phase. A wide range of submergence ratios (S/D=0.25 to 1) and two different fluid pairs (air-lubricating oil and air-transformer oil) are considered for this present investigation. Perturbation of the horizontal stratified interface is to be estimated in both advancing and receding junctions due to clockwise rotation of roller with steady free flow of gaseous phase. The influence of Reflow and ω on the liquid flow pattern around the roller is analysed in detail for different gas-liquid pairs and various submergence ratios. Moreover, the variation of length, thickness, and depth of air-entrained filament in the advancing zone of the roller is well predicted from the numerical simulations for the different combined effects of Reflow and ω.
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