Flow Pattern Transition in Riser Due to Instability of Voidage Wave
- 15 June 1988
- journal article
- Published by Physical Society of Japan in Journal of the Physics Society Japan
- Vol. 57 (6) , 1957-1962
- https://doi.org/10.1143/jpsj.57.1957
Abstract
In order to show that the transition from bubble flow to slug flow observed in a vertical riser is due to the instability of a voidage wave, an analysis and a calculation are performed on the basis of a dilute bubbly liquid model. The result demonstrates sucha possibility, together with expressions for propagation velocities, growth rate and coefficient of negative diffusion. Comparison is made with the previous experimental result.Keywords
This publication has 6 references indexed in Scilit:
- Observation of Wave-Hierarchy Instability in Bubbly Liquid Flow in Decompressed RiserJournal of the Physics Society Japan, 1987
- Acoustic Waves Forced in Flowing Bubbly LiquidJournal of the Physics Society Japan, 1986
- Mathematical Modeling of Two-Phase FlowAnnual Review of Fluid Mechanics, 1983
- Note on a wave-hierarchy interpretation of fluidized bed instabilitiesProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1982
- Application of general constitutive principles to the derivation of multidimensional two-phase flow equationsInternational Journal of Multiphase Flow, 1979
- On the mathematics of fluidization Part 1. Fundamental equations and wave propagationJournal of Fluid Mechanics, 1965