Abstract
In two-phase pipe flows, the slip velocity or, equivalently, the drift flux is related to the void fraction. This leads to the occurrence of kinematic waves which convey void fraction signals. Kinematic waves have been investigated experimentally in air-water two-phase flows by inducing small void fraction disturbances at the inlet of vertical ducts, the average void fraction varying from 0.01 (bubbly flows) to 0.41 (slug flows). The temporal fluctuations of the void fraction are detected in regularly spaced cross sections by non intrusive impedance probes. The statistical processing of the data reveals the existence of two kinematic modes and provides their velocities and damping or amplification coefficients. The results are presented and discussed. One of the modes, practically absent at low void fractions, is predominant at larger void fractions. As the void fraction increases it changes from damped to amplified and controls the bubble slug transition
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Bouré, J.A., 1988, Properties of kinematic waves in two-phase pipe flows; consequences on the modeling strategy, European Two-Phase Flow Group Meeting, Brussels.
Mercadier, Y., 1981, Contribution à l’étude des propagations de perturbations de taux de vide dans les écoulements diphasiques eau-air à bulles. Thèse de Docteur-Ingénieur, Université Scientifique et Médicale et Institut National Polytechnique de Grenoble.
Micaelli, J.C., 1982, Propagation d’ondes dans les écoulements diphasiques à bulles à deux constituants. Etude théorique et expérimentale, Thèse de Doctorat ès Science, Université Scientifique et Médicale et Institut National Polytechnique de Grenoble.
Saiz-Jabardo, J.M. & Bouré, J.A., 1989, Experiments on void fraction waves, Int. J. Multiphase Flow, 15, 483–493.
Tournaire, A., 1987a, Détection et étude des ondes de taux de vide en écoulement diphasique à bulles jusqu’à la transition bulles-bouchons, Thèse de Docteur-Ingénieur, Université Scientifique et Médicale et Institut National Polytechnique de Grenoble.
Tournaire, A., 1987b, Compilation des résultats expérimentaux obtenus sur la boucle Oscar, Internal report, SETh/LEF, Centre d’Etudes Nucléaires de Grenoble.
Wallis, G.B., 1961, Two-phase flow phenomena associated with the boiling of liquids, PhD Thesis, Cambridge University.
Whitham, G.B., 1974, Linear and nonlinear waves, J. Wiley & sons.
Zuber, N., 1961, Steady state, transient response, operating limits and continuity waves in two-phase flow systems, General Electric 61 GL 215.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1990 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Boure, J.A. (1990). Properties of Kinematic Waves in Two-Phase Pipe Flows. In: Meier, G.E.A., Thompson, P.A. (eds) Adiabatic Waves in Liquid-Vapor Systems. International Union of Theoretical and Applied Mechanics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-83587-2_18
Download citation
DOI: https://doi.org/10.1007/978-3-642-83587-2_18
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-83589-6
Online ISBN: 978-3-642-83587-2
eBook Packages: Springer Book Archive