Mass transfer to an accelerating multidrop system

Ramachandran, S; Kleinstreuer, Clement; Altwicker, Elmar R.

doi:10.1016/0017-9310(87)90276-6

Cited by 8 publications

(3 citation statements)

References 14 publications

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“…While Temos et al (1996) investigated the transfer of solutes between isolated drops and continuous phase in a droplet file column, the transfer coefficients for the continuous phase were found to be satisfactorily represented by the Garner-Tayeban correlation. Ramachandran et al (1987) have proposed a laminar wake mass transfer model for a drop stream accelerating in gas phase and has calculated the concentration of trace gas between any two drops. indicates that there are more recent studies on the transport of heat and/or mass for drop streams in gases than for drop streams in liquids.…”

Section: Y-y Huang a N D S M Lumentioning

confidence: 99%

Continuous Phase Mass Transfer Coefficients for Single Droplets Moving in an Infinite Droplet Chain

Huangs

1999

Chemical Engineering Communications

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Section: Y-y Huang a N D S M Lumentioning

confidence: 99%

Continuous Phase Mass Transfer Coefficients for Single Droplets Moving in an Infinite Droplet Chain

Huangs

1999

Chemical Engineering Communications

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“…They showed that the vertical interaction of drops caused a reduction in the mass transfer coefficient, but the effects of horizontal interaction were negligible. Ramachandran et al (1987) proposed a laminar wake mass transfer model for a drop stream accelerating in a gas phase and calculated the concentration of trace gas between any two drops.Although it is known that the mass transfer coefficient of drop stream is affected by the interdrop distance, the present knowledge in this subject is still far from sufficient. The purpose of this work is hence to investigate experimentally the continuous phase mass transfer coefficient of a monosize drop stream, falling in line, in a stagnant liquid…”

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Mass transfer to a drop stream from a field liquid

Huang

1997

Can J Chem Eng

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Mass transfer from a stream of drops falling freely in a stagnant liquid was investigated. Drop streams were produced by a dripping method and by a jet breakup method. Water and isobutanol, mutually saturated, were used as the dispersed and the continuous phases. Sodium hydroxide was transferred from isobutanol to water drops which were initially free of solute. The mass transfer resistance is on the continuous phase side. In liquid-liquid systems, the dispersed phase is often in the form of droplet swarms. To obtain a basic understanding about the mutual interference of droplets on heat andor mass transfer, drops arranged in an orderly manner have been investigated. Hsu (1967) made an analytical investigation on heat transfer to liquid metals flowing along a row of equally sized and equally spaced spheres. Inviscid potential flow was assumed. The local Nusselt number decreased with an increase in the angle from the leading stagnation point, and also decreased with a decrease in intersphere distance. Miura et al. (1977) investigated experimentally the evaporation rate of a water droplet floating in an air stream. They found that, for a droplet directly behind a glass bead, the Nusselt number is small when the droplet is in the wake of the bead. The value of the Nusselt number approaches that of a single droplet when the surface to surface distance exceeds twice the bead diameter. Shirotsuka and Kawase (1976) studied the mass transfer problem of a stream of drops rising in a stagnant liquid. By assuming an ideal fluid and a high Peclet number, they derived an equation for the mass transfer coefficient on the continuous phase side. Tal et al. (1 983) solved numerically the heat transfer problem of assemblages of spheres. The Nusselt numbers were computed for a fluid with Pr = 1 flowing over a row of spheres with uniform surface temperature. Their calculation shows that *Author to whom correspondence should be addressed. E-mail address: yyhuang~bmec.mc.ntu.edu.tw the Nusselt number for the first sphere is greater than that for other spheres and that the difference in Nusselt numbers for the second and third spheres is small. Skelland and Vasti ( 1985) investigated experimentally the mass transfer coefficient on the continuous phase side by using one and three drop streams in a stagnant liquid. They showed that the vertical interaction of drops caused a reduction in the mass transfer coefficient, but the effects of horizontal interaction were negligible. Ramachandran et al. (1987) proposed a laminar wake mass transfer model for a drop stream accelerating in a gas phase and calculated the concentration of trace gas between any two drops.Although it is known that the mass transfer coefficient of drop stream is affected by the interdrop distance, the present knowledge in this subject is still far from sufficient. The purpose of this work is hence to investigate experimentally the continuous phase mass transfer coefficient of a monosize drop stream, falling in line, in a stagnant liquid Materials and methodsWater and i...

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Convection heat transfer of closely-spaced spheres with surface blowing

Kleinstreuer

Chiang

1993

Wärme- und Stoffübertragung

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Mass transfer to an accelerating multidrop system

Cited by 8 publications

References 14 publications

Continuous Phase Mass Transfer Coefficients for Single Droplets Moving in an Infinite Droplet Chain

Continuous Phase Mass Transfer Coefficients for Single Droplets Moving in an Infinite Droplet Chain

Mass transfer to a drop stream from a field liquid

Convection heat transfer of closely-spaced spheres with surface blowing

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