Surface tension effects in small-scale thermo-fluid systems

Masahiro Shoji, Satoshi Someya, Tzu Hsiang Yen, Manabu Tange

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Surface tension plays an important role in multi-phase systems. Its effect becomes especially dominant in micro-scales because the ratio of surface (interface) to volume is relatively large. To understand such surface tension effects, it is required to understand the surface tension itself as a thermo-physical property and at the same time, its roles in fluid dynamics and heat and mass transfer. For the better understanding of surface tension effects, it is further recommended to learn some typical surface tension phenomena So in this article, the fundamental matters relevant to surface tension are firstly described, and then the action of surface tension in fluid dynamics as well as thermal-fluid systems is discussed by addressing similarity laws and dimensionless quantities with special attention to scaling effects. Surface tension problems, besides the two sides of thermo-physical property and the effects in thermo-fluid systems, include another important related problem, that is, the interaction of liquid with contacting solid surfaces. The last part of this article includes three recent topics, each of which relates to each side of the surface tension problems categorized above: i.e. a new precise measurement method of surface tension, flow patterns and heat transfer characteristics of two-phase flow in micro conducts, and solid surface modifications and their applications to fluidic devices.

Original languageEnglish
Title of host publicationProceedings of the 3rd International Conference on Microchannels and Minichannels, 2005
Pages189-201
Number of pages13
Publication statusPublished - 2005
Externally publishedYes
Event3rd International Conference on Microchannels and Minichannels, ICMM2005 - Toronto, ON, Canada
Duration: 2005 Jun 132005 Jun 15

Publication series

NameProceedings of the 3rd International Conference on Microchannels and Minichannels, 2005
VolumePART A

Conference

Conference3rd International Conference on Microchannels and Minichannels, ICMM2005
CountryCanada
CityToronto, ON
Period05/6/1305/6/15

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Shoji, M., Someya, S., Yen, T. H., & Tange, M. (2005). Surface tension effects in small-scale thermo-fluid systems. In Proceedings of the 3rd International Conference on Microchannels and Minichannels, 2005 (pp. 189-201). [ICMM2005-75258] (Proceedings of the 3rd International Conference on Microchannels and Minichannels, 2005; Vol. PART A).