Experimental study of a microchannel bubble injector for microgravity applications

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Title:	Experimental study of a microchannel bubble injector for microgravity applications
Author:	Arias Calderón, Santiago; Ruiz, Xavier; Casademunt, Jaume; Ramírez de la Piscina Millán, Laureano; González Cinca, Ricardo
Other authors:	Universitat Politècnica de Catalunya. Departament de Física Aplicada; Escola Politècnica Superior de Castelldefels; Universitat Politècnica de Catalunya. NOLIN - Física No-Lineal i Sistemes Fora de l'Equilibri
Abstract:	We perform a quantitative characterization of a microbubble injector in conditions relevant to microgravity. The injector pregenerates a slug flow by using a capillary T-junction, whose operation is robust to changes in gravity level. We address questions regarding the performance under different injection conditions. In particular we focus on the variation of both gas and liquid flow rates. The injection performance is characterized by measuring bubble injection frequency and bubble sizes. We obtain two distinct working regimes of the injector and identify the optimal performance as the crossover region between them.
Abstract:	Peer Reviewed
Subject(s):	-Àrees temàtiques de la UPC::Física -Àrees temàtiques de la UPC::Aeronàutica i espai -Microbubbles -Reduced gravity environments -Multiphase flow -Bubble -Microgravity -Multiphase flow -Gas injector -Bombolles
Rights:	Attribution-NonCommercial-NoDerivs 2.5 Spain http://creativecommons.org/licenses/by-nc-nd/2.5/es/
Document type:	Article
Published by:	Springer
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