Gas-phase flow and diffusion analysis of the droplet-train/flow-reactor technique for the mass-accommodation processes

Akihiro Morita, Masakazu Sugiyama, Seiichiro Koda

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)

Abstract

While the droplet-train/flow-reactor method is one of the most powerful experimental techniques to study mass-accommodation kinetics at liquid-vapor interfaces, relatively little is understood about the gas-phase diffusion resistance in the flow tube, an important ingredient to the overall uptake kinetics. In this paper, we theoretically examined the gaseous resistance by numerically solving the coupled-diffusion equation and fluid dynamics in the flow tube. The results indicate that the gaseous resistance for the train of droplets significantly deviates from that for a single spherical droplet because of the interference among the droplets and the flow effect. The dependences of the gaseous transport on varying droplet velocity and orifice frequency are examined and quantitatively elucidated on the basis of the calculated data. This paper suggests that an accurate formula for the gas-phase diffusion resistance is desirable, particularly for the quantitative evaluation of the mass-accommodation coefficients of liquids having substantial vapor pressures.

Original languageEnglish
Pages (from-to)1749-1759
Number of pages11
JournalJournal of Physical Chemistry A
Volume107
Issue number11
DOIs
Publication statusPublished - 2003 Mar 20
Externally publishedYes

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

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