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International Journal of Fluid Mechanics Research
ESCI SJR: 0.206 SNIP: 0.446 CiteScore™: 0.5

ISSN Imprimer: 2152-5102
ISSN En ligne: 2152-5110

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International Journal of Fluid Mechanics Research

DOI: 10.1615/InterJFluidMechRes.v40.i3.60
pages 266-279

Numerical Simulation of Falling Droplets/Jets over Horizontal Tubes

Ashok T. Pise
Department of Mechanical Engineering, Government College of Engineering Karad 415124, Maharashtra, India
Nitin U. Korde
Department of Mechanical Engineering, G. H. Raisoni Institute of Engineering & Technology Pune 412207, Maharashtra, India
R. H. Salunkhe
Department of Mechanical Engineering, Govt. College of Engineering, Karad, India

RÉSUMÉ

The objective of the present study is to investigate numerically falling film flow modes and its behavior over inline horizontal tubes. The axes of tubes are perpendicular to the flow direction. The effects of the thermo-physical properties of liquids, mass flow rate and geometrical parameters are studied. Liquids selected are mostly commercial used in falling film heat exchangers in the range of modified Galilieo number, Ga* = 36 to 552. The research focuses on studies of droplets/jets modes and its behaviors. Numerical simulations were performed using a commercial CFD code (FLUENT version 13.0) for 2D configurations with two inline cylinders and coupled volume-of-fluid and level-set method is used. The effects of film Reynolds number, modified Galileo number and geometrical parameters on the droplets/jets modes and its transition are studied. The correlation for droplets/jets mode transition from droplet to jet is proposed in terms of function of modified Galileo and Reynolds number. Results are validated with the experimental as well numerical data reported in the literature.


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