Publicou 6 edições por ano
ISSN Imprimir: 2152-5102
ISSN On-line: 2152-5110
Indexed in
Spectral Characteristics of the Pseudosonic Component of Hydrodynamical Noise In a Longitudinal Flow Around a Flexible Cylinder
RESUMO
Wall pressure fluctuations were measured in an axisymmetric turbulent boundary layer on a flexible cylinder parallel to the flow at Reynolds numbers of 107−108 and boundary layer thickness to cylinder radius ratio of 2.9−3.2. It has been found out that the intensity of pressure fluctuations in the turbulent boundary layer on the flexible cylinder is higher than that on a rigid cylinder or on a flat plate. An adjusted power spectrum of the pressure fluctuations is presented. The acousto-hydrodynamic factor for the spot sensor of the pressure fluctuations has been determined. The power spectrum of the wall pressure fluctuations on the flexible cylinder has been found out to be higher than that on the rigid cylinder. With the increase of velocity of the flow around the flexible cylinder there occurs a redistribution of energy of the turbulent pressure fluctuations from the high frequency area of the power spectrum into lower frequencies. In the frequency band ω+ @ (0.2−0.3) the maximums of the power spectrum and the coherence function irrespective of separation between the pressure fluctuation sensors are observed. With the increase of the frequency and separation, the coherence function descends, which characterizes a degeneracy of vortical structures both in scale and in the length of the cylinder in the flow.
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Voskoboinick V. A., Turick V. N., Voskoboinyk O. A., Voskoboinick A. V., Tereshchenko I. A., Influence of the Deep Spherical Dimple on the Pressure Field Under the Turbulent Boundary Layer, in Advances in Computer Science for Engineering and Education, 754, 2019. Crossref
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Voskoboinick V.A., Voskoboinick A.A., Voskoboinick A.V., Lucherini F., Redaelli A., Tereshchenko L.N., Fiore B., Jet flow and hydrodynamic noise of the open mechanical bileaflet heart valve, Hydrodynamics and acoustics, 1(91), 1, 2018. Crossref
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Voskoboinick Volodymyr, Voskoboinick Andriy, Voskoboinyk Oleksandr, Turick Volodymyr, Dimple Generators of Longitudinal Vortex Structures, in Boundary Layer Flows - Theory, Applications and Numerical Methods, 2020. Crossref
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Voskoboinick Vladimir, Voskoboinyk Oleksandr, Chertov Oleg, Voskoboinick Andrey, Tereshchenko Lidiia, Hydrodynamic Noise of Pulsating Jets through Bileaflet Mechanical Mitral Valve, BioMed Research International, 2020, 2020. Crossref
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Voskoboinick Andrey, Voskoboinick Vladimir, Turick Vladimir, Voskoboinyk Oleksandr, Cherny Dmytro, Tereshchenko Lidia, Interaction of Group of Bridge Piers on Scour, in Advances in Computer Science for Engineering and Education III, 1247, 2021. Crossref
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Voskoboinik V. A., Voskoboinik A. A., Turik V. N., Voskoboinik A. V., Space and Time Characteristics of the Velocity and Pressure Fields of the Fluid Flow Inside a Hemispherical Dimple Generator of Vortices, Journal of Engineering Physics and Thermophysics, 93, 5, 2020. Crossref
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Voskoboinick V. A., Voskoboinyk O. A., Onishchenko A. M., Voskobijnyk A. V., TRANSVERSELY STREAMLINED CYLINDER ON RIGID SURFACE, Journal of Numerical and Applied Mathematics, 1 (135), 2021. Crossref
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Voskoboinick Vladimir, Khomitsky Vitalii, Voskoboinyk Oleksandr, Tereshchenko Lidiia, Voskoboinick Andrey, Wave loads on protective dam of the Marine channel of the Danube-Black sea, Journal of Hydro-environment Research, 35, 2021. Crossref