Microscale heat transfer in single- and two-phase flows: Scaling, stability, transition

Research output: Chapter in Book/Report/Conference proceedingChapter (peer-reviewed)

Abstract

Partly because of the technological challenge, partly because of stark necessity, there has been an increasing movement towards a miniaturization of appliances in the last decade. In all technical fields solutions are sought that encumber as little as possible without compromising on performance: in medical diagnostics, environmental sample analysis, military defence, consumer electronics, biomedical appliances, chemical reactors and heat management a constant research for quicker response times and portable devices has driven the field of microtechnology to impressive levels. In many applications it has been found that many small active components are more productive than few large ones, which is also in keeping with the growing trend towards modular design. Proper understanding of microscale transport phenomena is therefore fundamental for the designer of microfluidic devices. For this reason, many studies have been conducted to analyse the behaviour of convective flow through microchannels, both in single-phase and in two-phase flow. A first glance of the literature, especially for single-phase flow, leads to the conclusion that up to now we have had an agglomeration of disparate conclusions. In many cases the experimental data in microchannels disagree with the conventional theory and empirical correlations, but they also appear to be inconsistent with one another. The present paper is an attempt to critically analyse the available results for liquid single-phase and flow boiling heat transfer, trying to provide some sort of base note in the melisma of published data.© 2012 by Nova Science Publishers, Inc. All rights reserved.
Original languageEnglish
Title of host publicationFrontier Research in Microscale and Nanoscale Thermal and Fluid Sciences
PublisherNova Science Publishers, Inc.
Publication statusPublished - Feb 2012

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Engineering(all)

Cite this

Celata, G. P. (2012). Microscale heat transfer in single- and two-phase flows: Scaling, stability, transition. In Frontier Research in Microscale and Nanoscale Thermal and Fluid Sciences Nova Science Publishers, Inc..