WALL-TRIGGERED INTERFACIAL RESONANCE IN LAMINAR GAS-LIQUID FLOW

Citation
V. Bontozoglou et G. Papapolymerou, WALL-TRIGGERED INTERFACIAL RESONANCE IN LAMINAR GAS-LIQUID FLOW, International journal of multiphase flow, 24(1), 1998, pp. 131-143
Citations number
11
Categorie Soggetti
Mechanics
ISSN journal
03019322
Volume
24
Issue
1
Year of publication
1998
Pages
131 - 143
Database
ISI
SICI code
0301-9322(1998)24:1<131:WIRILG>2.0.ZU;2-T
Abstract
Laminar gas-liquid flow through a channel with corrugated bottom, driv en by a combination of gravity and pressure drop, is considered. A lin ear analysis, valid for small-amplitude disturbances but arbitrary wav elength and Re number, leads to Orr-Sommerfeld type equations with non homogeneous boundary conditions. The interface amplitude relative to t he wall is examined and linearly infinite amplification is computed at specific resonance conditions. With increasing gas velocity,the range of corrugation wavelengths most active in producing strong interactio n with the interface expands considerably, and moves to higher values. It is argued that the resonant phenomenon under consideration may inf luence the interfacial dynamics of gas-liquid flows in small-scale pas sages. (C) 1997 Published by Elsevier Science Ltd.