Mass transfer in the continuous phase around axisymmetric bodies of revolution

Lochiel, A.C.; Calderbank, P.H.

doi:10.1016/0009-2509(64)85074-0

Cited by 284 publications

(160 citation statements)

References 31 publications

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“…The result coincides with that of Mashelkar and Chavan15)except that a diffe ent set of parameters is used. Average Sherwood number Sh based on a log-mean driving force is defined as Sh--(llx)Pe* ]n9 (ll) in which (13) in which f=1-f and the complete velocity profile is replaced by an asymptotic linear profile.…”

Section: Introductionmentioning

confidence: 99%

Solid-Liquid Mass Transfer in Falling Liquid Films on Single Spheres

Hirose

Mori

Sato

1974

J. Chem. Eng. Japan

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Section: Introductionmentioning

confidence: 99%

Solid-Liquid Mass Transfer in Falling Liquid Films on Single Spheres

Hirose

Mori

Sato

1974

J. Chem. Eng. Japan

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“…(9) and (10) are virtually identical. The value of the coefficient B 2 is found to be between 0.55 and 0.95 [25][26][27][28][29][30][31]. Mass transfer between fluidized solid particles and liquid has been studied extensively over a wide range of Reynolds numbers.…”

Section: Discussionmentioning

confidence: 99%

Intensification of mass transfer in liquid fluidized beds with inert particles

Yang¹,

Renken²

1998

Chemical Engineering and Processing: Process Intensification

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The influence of inert particles on liquid/solid mass transfer is studied in fluidized beds by using a binary-mixture of solids of differing size and density. The addition of inert particles of higher density and smaller diameter, e.g. glass beads, exerts remarkable effects on mass transfer coefficients in comparison to that of mono-component active particles at the same liquid velocity. The extent of the effect on liquid-solid mass transfer coefficients increases with an increasing fraction of the small inert particles in the mixture. The liquid-solid mass transfer coefficients for binary-mixtures are well correlated in terms of dimensionless groups and the voidage parameter.

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“…Due to the complexity of the 3D-flow around ellipsoids of revolution (Geissler, 1974;Rosenfeld et al, 1992), it is very difficult to obtain the gradient velocity and concentration at the fluid-particle interface outside the body, so the mass transfer rate is usually expressed in terms of the overall mass transfer coefficient (Strumillo and Kudra, 1986;Saravacos, 1995). As a result, as an approach the mean convective mass transfer coefficient on the surface of a spheroid can be obtained using either of the following methods: a) agreement between the predicted and experimental data using, for example, the least squares error technique (Queiroz, 1994;Carmo, 2004;Carmo and Lima, 2005) or b) empirical and theoretical mathematical correlations (Lochiel and Calderbank, 1964;Masliyah and Epstein, 1972;Clift et al, 1978;Coutelieris et al, 1995;Feng and Michaelides, 1997).…”

Section: Analytical Proceduresmentioning

confidence: 99%

Mass transfer inside oblate spheroidal solids: modelling and simulation

Carmo

Lima

2008

Braz. J. Chem. Eng.

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-A numerical solution of the unsteady diffusion equation describing mass transfer inside oblate spheroids, considering a constant diffusion coefficient and the convective boundary condition, is presented. The diffusion equation written in the oblate spheroidal coordinate system was used for a two-dimensional case. The finite-volume method was employed to discretize the basic equation. The linear equation set was solved iteratively using the Gauss-Seidel method. As applications, the effects of the Fourier number, the Biot number and the aspect ratio of the body on the drying rate and moisture content during the process are presented. To validate the methodology, results obtained in this work are compared with analytical results of the moisture content encountered in the literature and good agreement was obtained. The results show that the model is consistent and it may be used to solve cases such as those that include disks and spheres and/or those with variable properties with small modifications.

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Mass transfer in the continuous phase around axisymmetric bodies of revolution

Cited by 284 publications

References 31 publications

Solid-Liquid Mass Transfer in Falling Liquid Films on Single Spheres

Solid-Liquid Mass Transfer in Falling Liquid Films on Single Spheres

Intensification of mass transfer in liquid fluidized beds with inert particles

Mass transfer inside oblate spheroidal solids: modelling and simulation

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