Numerical study of time-dependent flow of immiscible Saffman dusty (fluid-particle suspension) and Eringen micropolar fluids in a duct with a modified cubic B-spline Differential Quadrature method

Chandrawat, RC, Joshi, V and Beg, OA ORCID: https://orcid.org/0000-0001-5925-6711 2022, 'Numerical study of time-dependent flow of immiscible Saffman dusty (fluid-particle suspension) and Eringen micropolar fluids in a duct with a modified cubic B-spline Differential Quadrature method' , International Communications in Heat and Mass Transfer, 130 , p. 105758.

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Abstract

Immiscible flows arise in many diverse applications in mechanical, chemical, and environmental engineering. Such flows involve interfacial conditions and often feature mass (species) diffusion. Motivated by applications in non-Newtonian duct processing, in the present article a comprehensive mathematical model and computational simulation with the modified cubic B-spine-Differential Quadrature method (MCB-DQM) is described for the unsteady flow of two immiscible fluids - dusty (fluid-particle suspension) and Eringen micropolar fluids - through horizontal channels. Mass transfer is invoked due to particle concentration effects in the dusty fluid. The stable liquid-liquid interface is considered between two immiscible fluids. Fluids are considered to flow under three different pressure gradients- constant, decaying, and periodic pressure gradient and the flow characteristics are scrutinized for each case. The coupled partial differential equations are solved with the MCB-DQM under physically realistic boundary conditions. Linear velocity, micro-rotation (Eringen angular velocity) is visualized graphically for the effects of the key hydrodynamic and solutal parameters i. e. Reynolds number, particle concentration parameter, Eringen micropolar material parameter, volume fraction parameter, pressure gradient, time, viscosity ratio, and density ratio. The simulations extend the current understanding of two-fluid interfacial duct hydrodynamics and mass transfer and are relevant to chemical engineering separation processing systems.

Item Type: Article
Schools: Schools > School of Computing, Science and Engineering
Journal or Publication Title: International Communications in Heat and Mass Transfer
Publisher: Elsevier
ISSN: 0735-1933
Related URLs:
Depositing User: OA Beg
Date Deposited: 12 Nov 2021 14:41
Last Modified: 01 Dec 2021 15:30
URI: http://usir.salford.ac.uk/id/eprint/62349

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