Author:
HORN D. A.,IMBERGER J.,IVEY G. N.,REDEKOPP L. G.
Abstract
A simple model is developed, based on an approximation of the Boussinesq equation,
that considers the weakly nonlinear evolution of an initial interface disturbance in a
closed basin. The solution consists of the sum of the solutions of two independent
Korteweg–de Vries (KdV) equations (one along each characteristic) and a second-order
wave–wave interaction term. It is demonstrated that the solutions of the two
independent KdV equations over the basin length [0, L] can be obtained by the
integration of a single KdV equation over the extended reflected domain [0, 2L]. The
main effect of the second-order correction is to introduce a phase shift to the sum of
the KdV solutions where they overlap. The results of model simulations are shown to
compare qualitatively well with laboratory experiments. It is shown that, provided the
damping timescale is slower than the steepening timescale, any initial displacement
of the interface in a closed basin will generate three types of internal waves: a packet
of solitary waves, a dispersive long wave and a train of dispersive oscillatory waves.
Publisher
Cambridge University Press (CUP)
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics
Cited by
33 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献