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Registration Number

0215U001170, 0114U002436 , R & D reports

Title

Theoretical and experimental researches of aero- and hydrodynamic characteristics of bodies in a non-stationary fluid flow.

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Head

Moroz Volodymyr,

Registration Date

30-01-2015

Organization

The Institute of Hydromechanics of the National Academy of Sciences of Ukraine

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On the basis of the analysis of the open sources of the information it is drawn a conclusion that nonstationarity a flow of a fluid, as a rule, is caused by constant change of acceleration (brake action) of a fluid and an incidence of a body concerning a flow. For definition of hydrodynamic parameters of bodies in a nonstationary flow of a fluid the greatest distribution was received with the quasi-stationary theory according to which it is considered, that nonstationary hydrodynamic forces have inertial and viscous the nature. Significally hydrodynamic parameters of a body in a nonstationary flow are influenced with a previous history of movement, for example, the flow is expedited from condition of rest, or from condition of stable motion. Among designs in which nonstationarity a stream is defining , the passed most round are wind turbine with an axis of yaw of twirl, thrust -steering complexes fin type of vessels and aircrafts, etc. Problems nonstationarity as are in-process in detail observed at a flow of complex designs (vessels, airplanes, etc.), and oscillating wings (thrust -steering complexes fin type). In particular it is shown, that in cases detached flows it is necessary to concentrate on studying of coherent whirlwind structures and on development of methods of management of them.

Product Description

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Бабенко Віктор Віталійович
Глушко Валентин Миколайович
Шеховцов Олександр Володимирович

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2020-04-02