Nonlinear dynamics of hydrostatic internal gravity waves
نویسندگان
چکیده
منابع مشابه
Nonlinear Dynamics of Hydrostatic Internal Gravity Waves
Stratified hydrostatic fluids have linear internal gravity waves with different phase speeds and vertical profiles. Here a simplified set of partial differential equations (PDE) is derived to represent the nonlinear dynamics of waves with different vertical profiles. The equations are derived by projecting the full nonlinear equations onto the vertical modes of two gravity waves, and the result...
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Two intersecting beams of internal gravity waves will generically create two wave packets by nonlinear interaction. The frequency of one packet will be the sum and that of the other packet will be the difference of the frequencies of the intersecting beams. In principle, each packet should form an "X" pattern, or "St. Andrew's cross" consisting of four beams outgoing from the point of intersect...
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The propagation of long, weakly nonlinear internal waves in a stratified gas is studied. Hydrodynamic equations for an ideal fluid with the perfect gas law describe the atmospheric gas behaviour. If we neglect the term ρ dw/dt (product of the density and vertical acceleration), we come to a so-called quasistatic model, while we name the full hydrodynamic model as a nonquasistatic one. Both quas...
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ژورنال
عنوان ژورنال: Theoretical and Computational Fluid Dynamics
سال: 2008
ISSN: 0935-4964,1432-2250
DOI: 10.1007/s00162-008-0080-7