Thermohydrodynamics of the Ocean

Physical Oceanography

, Volume 20, Issue 6, pp 397-409

Numerical analysis and visualization of fine structures of the fields of two-dimensional attached internal waves

  • Yu. D. ChashechkinAffiliated withIshlinskii Institute for Problems in Mechanics, Russian Academy of Sciences Email author 
  • , R. N. BardakovAffiliated withIshlinskii Institute for Problems in Mechanics, Russian Academy of Sciences
  • , Ya. V. ZagumennyiAffiliated withInstitute of Hydromechanics, Ukrainian National Academy of Sciences

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In the linear approximation, we compute the patterns of two-dimensional perturbations formed in a viscous exponentially stratified fluid in the process of motion of a plate at an arbitrary angle to the horizon. The exact solution of the problem obtained in quadratures and satisfying the physically meaningful boundary conditions is numerically analyzed. The properties of the fields are computed and described in broad ranges of all parameters of the problem, including the length and velocity of motion of the plate, the characteristics of stratification and viscosity of the medium, and the slope of the path. In the picture of currents, we distinguish two groups of waves and compact nonwave singularities near the edges of a source of generation. The results of comparison with the available data of independently performed calculations and experiments reveal the existing agreement between the computed and observed pictures of the currents.