METHOD FOR CONSTRUCTION OF A HYDRODYNAMIC MODEL OF A SOURCE OF STORM SURGES AND EXTREME CURRENTS UNDER THE INFLUENCE OF A MOVING ATMOSPHERIC TYPHOON Russian patent published in 2018 - IPC G01W1/00 G06F19/00 

FIELD: hydrodynamic modeling.

SUBSTANCE: invention concerns the hydrodynamic modeling of the source of storm surges and extreme currents under the influence of a moving atmospheric typhoon. Essence: an external disturbance for a direct computational experiment in modeling storm surges and extreme currents near the coast is determined with the possibility of selecting the most probable or potentially dangerous routes of atmospheric typhoons and deep cyclones over the high seas. Herewith, the sea level disturbance is specified in differential increments of atmospheric pressure in the form of the Gaussian source – bells inside a circle on the autogonal Mercator map. Moving source of atmospheric pressure is supplemented by wind stress with a spiral tightening of surface waters to the center of the cyclonic vortex. To exclude impact loads on the water surface, all geometric elements of the shape and trajectory of the atmospheric vortex, as well as all its aerohydrodynamic characteristics, are smoothly distributed using smooth spline approximations between control geographical points on an arbitrarily chosen route of an atmospheric typhoon or a deep cyclone. Methods used for spline interpolation of geometric and hydrometeorological parameters are based on indexes of control points in time, which formally allows the possibility of temporary stop the cyclone movement, including the subsequent return of it to the path traversed, while impact loads on the sea surface are not appeared.

EFFECT: technical result: exact definition of the route of movement, of the initial geometric shape and hydrodynamic parameters of the source of disturbance of the water surface during the passage of typhoons and deep cyclones.

1 cl, 2 dwg