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Information × Registration Number 0223U001751, 0118U005413 , R & D reports Title The Estimation of the acoustic features by sound flap, given birth by detachable currents and supersonic flow. popup.stage_title Head Hrinchenko Viktor T, д.ф.-м.н. Registration Date 02-02-2023 Organization The Institute of Hydromechanics of the National Academy of Sciences of Ukraine popup.description2  In the first chapter, an improved semi-empirical methodology for estimating acoustic loads on the main part of the rocket during takeoff from a launch complex with a closed gas duct is developed. The second section deals with acoustic fields generated by liquid or gas flows, which contain information about the flow properties. In particular, the sounds generated by the flow in the channel in the presence of solid obstacles, sharp narrowings (stenoses), contain information about the characteristics of the flow and the characteristics of the obstacles themselves. The third section of the report summarizes the results of research devoted to the development of an analytical-numerical method for solving problems of acoustic radiation of separation currents in straight channels of circular cross-section with local narrowings. The fourth chapter of the report proposes a method for separating the auscultatory signal registered on the human chest into its natural components - breathing sounds, heart tones and stationary background noise. The fifth chapter of the report deals with the hybrid method of estimating the acoustic field generated by a viscous homogeneous rectilinear flow with a constant subsonic speed flowing around a two-dimensional circular cylindrical groove. In the sixth chapter of the report, the methods of laboratory and numerical studies are combined with those used in natural conditions. This made it possible to obtain additional information, assess the role of large-scale factors and, finally, optimize the methods of experimental research for the solution of specific applied problems. The seventh chapter of the report examines the model of dynamic interaction of a shallow foundation with a layered soil base saturated with liquid. Product Description popup.authors Basovsky Vladimir G. Borisyuk Andrey A. Vovk Igor V Horodetska Nataliia S. Hrinchenko Viktor T. Makarenkova Anastasiya A. Malyuga Volodymyr S. Oliinyk Valerii N. Ostroverkh Borys M. Rudnytska Maria O. Rudnitskii Oleksandr H. Sidko Maria I. Savytskyi Oleh А. Sobol Тetiana V. Tkachenko Ludmila V. popup.nrat_date 2023-02-02 Close