Numerical simulation of single bubble rising in vertical and inclined square channel using lattice Boltzmann method

作者: Luz Amaya-Bower , Taehun Lee , None

DOI: 10.1016/J.CES.2010.11.043

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摘要: Abstract A lattice Boltzmann equation (LBE) model based on the Cahn–Hilliard diffuse interface approach is used to investigate dynamics of a bubble rising in vertical and inclined square channel with large density viscosity ratios. Deformation parameter Δ , film thickness δ terminal velocity U t are interrelated quantities which depend non-dimensional numbers such as Bond number Bo Morton Mo ratio between diameter width k it was reported by previous experimental studies. As increased, higher smaller exhibited. This finding independent value . In addition, relationship established Capillary Ca Weber We An evaluation performed for channels relate Froude Fr inclination angle θ where each case there critical corresponds highest consequently consistent simulation results. Moreover, relation three-dimensional study using range ( 1 12 ), 10 − 4 3 ) varied from 0 75°.

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