Mass transfer from rotating disk to non-newtonian fluids

Mishra, Pavan Kumar; Singh, Prakash Chandra

doi:10.1016/0009-2509(78)85195-1

Cited by 17 publications

(5 citation statements)

References 16 publications

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“…Acrivos et al (1960) obtained a more rigorous solution for Ostwald-de Waele fluids past external surfaces in which the perpendicular component of velocity is taken also into account. Mishra and Singh (1978) discussed mass transfer from a disk rotating in Ostwald-de Waele fluids using boundary layer flow velocity profiles. Ruckenstein (1958) proposed a turbulent mass transfer model for high Schmidt numbers for Newtonian fluids in which turbulent transfer is assumed to be characterized by a mosaic of laminar quasi-steady boundary layer type processes.…”

Section: Laminar Flowmentioning

confidence: 68%

Heat and mass transfer in non‐newtonian fluid flow with power function velocity profiles

Kawase

Ulbrecht

1983

Can J Chem Eng

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Heat and mass transfer in laminar and turbulent non‐Newtonian fluids is investigated in this work using the power function velocity profiles. Analytical solutions are presented for cases of mass transfer in laminar non‐Newtonian fluid flows, namely for a flat velocity profile (plug flow), for the case of a constant velocity gradient at the solid boundary (Couette flow), and for the velocity distribution within a laminar boundary layer on a flat plate, and these are illustrated by rotating disks and cylinders in laminar Ostwald‐de Waele fluids. Further, turbulent mass transfer processes (tubular flow, rotating disk, and rotating cylinder) in non‐Newtonian fluids (Ostwald‐de Waele fluid and drag‐reducing fluid) at low and large Schmidt numbers are also discussed using the solutions of mass transfer in flows with power function velocity profiles. Reasonable agreement is found between the predictions of this work and the available experimental data and correlations.

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Section: Laminar Flowmentioning

confidence: 68%

Heat and mass transfer in non‐newtonian fluid flow with power function velocity profiles

Kawase

Ulbrecht

1983

Can J Chem Eng

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“…Previous work studied the diffusion coefficient and the mass transfer rate in non-Newtonian fluids where viscosity is a function of shear rate (Hansford and Litt 1968;Mishra and Singh 1978;Rozieres et al 1994). Hansford and Litt (1968) developed an equation to obtain the mass flux across a rotating disk in non-Newtonian fluids (powerlaw fluids):…”

Section: Newtonian Fluidsmentioning

confidence: 99%

A Calibrated Computational Fluid Dynamics Model for Simulating the Rotating Disk Apparatus

et al. 2021

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Summary Reaction kinetics between calcite and acid systems have been studied using the rotating disk apparatus (RDA). However, simplifying assumptions have been made to develop the current equations used to interpret RDA experiments to enable solving them analytically in contrast to using numerical methods. Previous work has revealed inadequacies of some of these assumptions, which necessitates the use of a computational fluid dynamics (CFD) model to investigate their impact on the RDA results. The objectives of the current work are to develop a calibrated CFD and proxy model to simulate the reaction in the RDA and use this model to estimate the diffusion coefficient and the reaction rate coefficient of the reaction in the RDA. The present work developed the first calibrated CFD model to determine the diffusion coefficient and the reaction rate coefficient in the RDA with minimum assumptions in the hydrochloric acid (HCl) carbonate reaction. More specifically, the model relaxes the constant fluid properties, infinite acting reactor boundaries, and constant reaction surface area assumptions. The proxy model obtained results in reduced computational time with minimal compromise on accuracy. Finally, the proposed model showed an improvement of 63% in predicting the reaction kinetics between calcite and HCl compared to traditional methods.

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“…Awad [6] presented asymptotic solutions for thermal convection in swirling disk flow at very low and very high Prandtl numbers, computing Nusselt numbers for these extreme scenarios. Mass (species) diffusion and rheological effects were explored by Grief and Paterson [7] and later Mishra and Singh [8] for rotating disk flow. He et al [9] measured the effect of disk rotating speed in Von Karman thermosolutal flow.…”

Section: Introductionmentioning

confidence: 99%

Computation of von Karman thermo-solutal swirling flow of a nanofluid over a rotating disk to a non-Darcian porous medium with hydrodynamic/thermal slip

Umavathi

Bég

2021

J Therm Anal Calorim

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Mass transfer from rotating disk to non-newtonian fluids

Cited by 17 publications

References 16 publications

Heat and mass transfer in non‐newtonian fluid flow with power function velocity profiles

Heat and mass transfer in non‐newtonian fluid flow with power function velocity profiles

A Calibrated Computational Fluid Dynamics Model for Simulating the Rotating Disk Apparatus

Computation of von Karman thermo-solutal swirling flow of a nanofluid over a rotating disk to a non-Darcian porous medium with hydrodynamic/thermal slip

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