Physical Reasoning of Double- to Single-Loop Transition in Industrial Reactors using Computational Fluid Dynamics

نویسندگان

چکیده

Double- to single-loop pattern transition and a significant reduction in the power number with decrease clearance of Rushton turbine impeller baffled reactor was elucidated earlier research works. The present work investigates physical reasons behind these phenomena using computational fluid dynamics approach. Reynolds Averaged Navier–Stokes equations standard turbulence model closure were used turbulent flow conditions vessels. Multiple Reference Frame (MRF) approach adopted baffle interactions implicit Volume Fluid (VOF) method employed simulate aeration process configurations considered. development low pressure region below vessel deflects discharge streams downward, leading formation pattern. downward movement reduces vortex activity blades, weaker form drag impeller. Similarly, high provides above which impeller, resulting considerable increase air entrainment due superior near free liquid surface. found provide bulk mixing as overall dissipation rate is 35% more than that associated

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ژورنال

عنوان ژورنال: Journal of Applied Fluid Mechanics

سال: 2022

ISSN: ['1735-3572', '1735-3645']

DOI: https://doi.org/10.47176/jafm.15.05.1190