ЧИСЛЕННОЕ ИССЛЕДОВАНИЕ ТЕЧЕНИЙ В ЦИМЛЯНСКОМ ВОДОХРАНИЛИЩЕ ПРИ РАЗНЫХ УРОВНЯХ НАПОЛНЕНИЯ ВОДОХРАНИЛИЩА

Abstract

A description of the mathematical model of the hydrodynamics of the Tsimlyansk reservoir is given. In shallow water regions, the flows are described by the equations of shallow water, and in deep-water regions by both the equations of shallow water and the three-dimensional equations of motion of an incompressible viscous fluid. The problem is solved by finite difference methods on a uniform difference grid. The calculations were carried out at different levels of reservoir filling. A comparison of the results obtained with the surface currents scheme constructed based on the results of field work performed in the spring of 2019 is carried out. The pictures of currents were obtained at different water edges. For the period of expeditionary field work in May 2019, hydrodynamics was calculated on the near-dam site using wind data obtained for this period and compared with the results of field measurements of currents. Comparison of the obtained results of numerical modeling with the scheme of surface currents measured from the research vessel reveals a high proportion of convergence of the calculated and field data. The obtained estimates of the modeling results allow us to proceed to the problem of predicting unfavorable hydrometeorological conditions in the Tsimlyansk reservoir, which carry the risk of disrupting the operation of the water intakes of Volgodonsk located in the southern part of the near-dam site