Strange interfacial waves in stratified flows of immiscible fluids

B. Roy, B.K. Chatterjee, M.H. Engineer and Pradip Roy

Physica A: Statistical Mechanics and its Applications, 1992, vol. 186, issue 1, 250-257

Abstract: The interface in acoustically driven layered liquids, in an enclosed geometry, was found to be unstable at a critical value of the axial streaming velocity. Above this critical value, which depends on the system parameters, tiny, uncorrelated ripples were generated. Then, beyond a second, larger critical velocity, large quasiperiodic pulses of deformation which propagate without change of shape in a direction opposite to that of the axial streaming velocity of both liquids, are spontaneously generated. Experimental data are presented describing aspects of this novel phenomenon, which occurs only when the fluids have small values of interfacial tension (IFT) and density difference.

Date: 1992
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:186:y:1992:i:1:p:250-257

DOI: 10.1016/0378-4371(92)90380-9

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