On the three-dimensional internal waves excited by topography in the flow of a stratified fluid

摘要: A numerical study of the three-dimensional internal waves excited by topography in flow a stratified fluid is described. In resonant nearly two-layer fluid, it found that time-development nonlinearly agrees qualitatively with solution forced KP equation or extended equation. this case, upstream-advancing solitary become asymptotically straight crested because abnormal reflection at sidewall similar to Mach reflection. The same phenomenon also occurs subcritical fluid. However, linearly Boussinesq two-dimensionalization upstream can be interpreted as separation lateral modes due differences group velocity linear wave, although does not mean general generation describable linearized