Impact of non-hydrostatic long wave dynamics on hydrotechnical constructions
https://doi.org/10.7868/S2073667319020084
Abstract
For modeling of long-wave impact on hydraulic engineering constructions the boundary value problem in three-dimensional area for the equations of the motion, continuity, constituents of density and characteristics of turbulence is set. The problem is solved by finite-difference fractional time method; non-hydrostatic component of pressure is defined at the final stage by the solution of a boundary value problem for the Poisson’s equation. Calculations are carried out by means of the program system CARDINAL. The boundary-fitted curvilinear grid is used, in the vertical direction s-transformation is used. Characteristics of turbulence are calculated with the help of k-e model. The numerical method is tested on simplified examples. Assessment of influence of non-hydrostatic pressure component is made with calculation of extreme tsunami on a water intake of nuclear power plant El-Dabaa, Egypt projected on the Mediterranean coast and calculation of the velocity field during the storm surge in the navigation canal of St.-Petersburg Flood Protection Barrier. It is revealed that in non-hydrostatic solution at an entrance to narrowness, on a bottom raising increase in vertical velocities from bottom to surface, causes local rise in water level here. The provided applications of a method show what dynamic component of pressure can modify considerably structure of currents on elements of the hydraulic engineering constructions.
About the Authors
N. E. Voltzinger
Shirshov Institute of Oceanology of Russian Academy of Sciences
Russian Federation
Russian Federation
Moscow
K. A. Klevannyy
LLC CARDINAL-Soft
Russian Federation
Russian Federation
St.-Petersburg
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Review
For citations:
Voltzinger N.E., Klevannyy K.A. Impact of non-hydrostatic long wave dynamics on hydrotechnical constructions. Fundamental and Applied Hydrophysics. 2019;12(2):66-76. (In Russ.) https://doi.org/10.7868/S2073667319020084
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