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Journal of Applied Mechanics and Technical Physics

2014 year, number 2

Steady Waves in a Stratified Flow over a Combined Obstacle

N. I. Makarenko1,2, J. L. Maltseva1,2
1Lavrentyev Institute of Hydrodynamics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090 Russia
2Novosibirsk State University, Novosibirsk, 630090 Russia
Keywords: stratified flows, internal waves


A problem of steady internal waves in subcritical flows of a stratified liquid over a finite sequence of bottom elevations is considered. An asymptotic solution of the second order of accuracy, which takes into account nonlinear effects, is constructed by the method of perturbations in terms of the small parameter of the obstacle height. Near-field interference wave structures are studied.