Determination of void fraction of two-phase flow in slit microchannel

Yuriy Dementyev, Fedor Ronshin

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review


With the development of miniaturization of devices in various fields (medicine, chemistry, microelectronics), a central problem is the study of hydrodynamic processes in microsystems. One of the main parameters characterizing a two-phase flow is void fraction. In the present work, the void fraction in the slit microchannel with the height of 56 μm and the width of 10 mm was determined using shlieren technique and special algorithm developed in Matlab®. Furthermore, the dependence between time averaged void fraction and homogeneous void fraction was created. The comparison between experimental data and existed void fraction correlations was performed. It was shown that correlations of Kawahara[1] and Xiong and Chung[2] developed for circle and rectangular microchannels qualitatively describe the behavior of void fraction in slit microchannel too.

Original languageEnglish
Title of host publicationThermophysical Basis of Energy Technologies, TBET 2019
EditorsGeniy Kuznetsov, Dmitry Feoktistov, Evgeniya Orlova
PublisherAmerican Institute of Physics Inc.
Number of pages4
ISBN (Electronic)9780735419636
Publication statusPublished - 13 Mar 2020
Event2019 Thermophysical Basis of Energy Technologies - Tomsk, Russian Federation
Duration: 9 Oct 201911 Oct 2019

Publication series

NameAIP Conference Proceedings
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616


Conference2019 Thermophysical Basis of Energy Technologies
CountryRussian Federation




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