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Roll Waves in Channels with an Active Gas Phase

type de publication      article in an international journal with refereeing comitee
date de publication 2015
auteur(s) Boudlal Abdelaziz; Liapidevskii Valery Yu
journal (abréviation) Journal of Applied Mechanics and Technical Physics (J Appl Mech Tech Phys)
volume (numéro) 56 (4)
pages 541 – 548
résumé A mathematical model of the flow of a thin layer of heavy liquid under an elastic shell filled with gas is constructed. By means of mass exchange with the environment, the gas phase is active and maintains self-organized wave motion in the liquid layer. The conditions under which small perturbations are transformed into quasiperiodic wave packets of finite amplitude which move in the same direction are found. It is shown that the structure of the waves is similar to that of roll waves in open channels.
mots clés roll waves, hyperbolic equations, discontinuous solutions, stability of wave packets
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