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Home Archives Thermal Letter Officers Future meetings Assembly for International Heat Transfer Conferences

ISBN : 978-1-56700-421-2

International Heat Transfer Conference 15
2014, 10-15 August, Kyoto, Japan

Study on Liquid Film Thickness of Accelerated Slug Flow in Micro Tubes

Get access DOI: 10.1615/IHTC15.tbf.008906
pages 7693-7702

Abstract

Liquid film in a slug flow plays an important role in heat exchangers and chemical reactors, since local heat and mass transfer is effectively enhanced at the thin liquid film region. To develop precise heat transfer models for micro-scale two phase flows, it is crucial to predict liquid film thickness accurately around the confined bubble. In this work, the liquid film thickness in accelerated flow under the adiabatic condition is investigated experimentally and numerically considering the initial steady flow velocity. The experimental study uses laser focus displacement meter to measure the liquid film thickness, and water is used as a working fluid. The effect of the initial flow velocity on the initial liquid film thickness is discussed. The numerical study employs Phase-Field method to capture the interface in micro tube slug flows. Flow fields of steady and accelerated flows are investigated from the numerical result.
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