INTERNAL WAVES IN TWO-LAYER STRATIFIED FLOWS

This paper deals with a problem of internal waves in a two-layer stratified fluid with a density that depends exponentially on the depth inside the layers and has a jump at the interface. The equation of second-order long-wave approximation, which describes solitary waves, is derived. The spectral p...

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Veröffentlicht in:	Journal of applied mechanics and technical physics 2022-12, Vol.63 (6), p.1022-1029
Hauptverfasser:	Makarenko, N. I., Maltseva, J. L., Cherevko, A. A.
Format:	Artikel
Sprache:	eng
Schlagworte:	Applications of Mathematics Classical and Continuum Physics Classical Mechanics Flow stability Fluid- and Aerodynamics Internal waves Kelvin-Helmholtz instability Mathematical Modeling and Industrial Mathematics Mechanical Engineering Perturbation Physics Physics and Astronomy Solitary waves Stratified flow
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Beschreibung
Zusammenfassung:	This paper deals with a problem of internal waves in a two-layer stratified fluid with a density that depends exponentially on the depth inside the layers and has a jump at the interface. The equation of second-order long-wave approximation, which describes solitary waves, is derived. The spectral properties of the equations of small perturbations of a horizontal piecewise constant flow are studied, and possible mechanisms for the shear instability of a stratified flow are characterized.
ISSN:	0021-8944 1573-8620
DOI:	10.1134/S0021894422060153