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Flow boiling in straight heated tube under normal gravity and microgravity conditions

Narcy, Marine. Flow boiling in straight heated tube under normal gravity and microgravity conditions. PhD, Institut National Polytechnique de Toulouse, 2014

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Official URL: http://ethesis.inp-toulouse.fr/archive/00002984/

Abstract

Forced convective boiling experiments of HFE-7000 in a vertical heated tube were conducted in earth gravity and under microgravity conditions. The experiment mainly consists in the study of a two-phase flow inside a 6mm diameter sapphire tube uniformly heated through an ITO coating. Measurements of pressure drops, void fraction, and liquid and wall temperatures are performed, along with flow visualisations. Data were collected in normal gravity and during four parabolic flight campaigns providing near weightlessness conditions. Flow visualisations, temperature and pressure signals are analysed to obtain flow patterns, void fraction, wall and interfacial shear stresses, and heat transfer coefficient data. These experimental results and comparisons with other available datasets are used to attempt a modelling of flow boiling in microgravity.

Item Type:PhD Thesis
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Institution:Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
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Research Director:
Colin, Catherine
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Deposited By: admin admin
Deposited On:10 Mar 2015 22:59

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