Structure of air turbulent motion inside Primary mirror shaft at Siberian lidar station of IAO SB RAS. Experiment and simulation
V.V. Nosov, V.P. Lukin, E.V. Nosov, A.V. Torgaev
V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, 1, Academician Zuev square, Tomsk, 634021, Russia
Keywords: турбулентность, когерентная турбулентность, когерентная структура, топологический солитон, численное моделирование когерентных структур, уравнения гидродинамики, уравнения Навье-Стокса, топологические предвестники, turbulence, coherent turbulence, coherent structure, topological soliton, simulation of coherent structures, hydrodynamics equations, Navier-Stokes equations, topological precursors
Abstract
Structure of air turbulent motion inside the dome room (Primary mirror closed shaft) at Siberian lidar station of V.E. Zuev Institute of Atmospheric Optics of SB RAS has been experimentally and theoretically studied. The researches are needed to forecast the laser radiation distortion. Experimental measurements have been performed with the portable compact ultrasonic meteorological station. The major heat-exchange directions of air flows inside the dome have been determined. Theoretical results have been obtained by numerical solving of the boundary value problem for Navier-Stokes equations. Solitary large vortices (coherent structures, topological solitons) are observed indoors. Coherent decay of these vortices leads to the coherent turbulence. One may expect the weakening of optical radiation phase fluctuations inside the dome and, therefore, the enhancement of optical images. It increases the efficiency of lidar station.
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