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Information × Registration Number 0221U101904, 0119U100255 , R & D reports Title Investigation of the effect of motion non-stationary and the environment non-isotermicity on the formation of vortex structures in the flow popup.stage_title Head Voropаiev Hennаdii O., Доктор фізико-математичних наук Registration Date 26-01-2021 Organization Institute of Hydromechanics of NAS of Ukraine popup.description2 The purpose of the study is to study the influence of the spatial and temporal scales of vortex structures in the flow near the surface of bodies flowing through a viscous fluid flow, depending on the physical properties of the liquid medium, geometrical parameters and laws of motion of bodies, as well as the influence of vortex structures on the hydrodynamic resistance of bodies, intensification of heat exchange in the elements of power equipment. The research method is a physical and numerical experiment. Based on the developed numerical models, the features of the formation of 3D vortex perturbations in the boundary layer are shown in the presence of a local periodic perturbation source on a flat surface. The parameters of the oscillatory motion of the wing profile are determined, which result in the flow detachment and the propulsive force generation. The influence of change in the direction of heat flow and the value of Reynolds number on the processes of the vortex structure formation downstream is determined at the transient flow regime. The results of methodical physical experiment and numerical modelling are obtained, which demonstrate the influence of flow non-stationarity on the vortex structures formation on a flat surface with a system of oval holes. Product Description popup.authors Baskova Oleksandra О. Dymytriieva Nataliia F Zagumennyi Iaroslav V Paramonov Yuriy О. Rozumniuk Natalia V. popup.nrat_date 2021-01-26 Close