Zobrazeno 1 - 10 of 30 pro vyhledávání: '"Ya. LEVCHENKO"'
1
DECISION SUPPORT SYSTEM ON THE FORMATION AND IMPLEMENTATION OF THE STRATEGY OF TRANSPORT INFRASTRUCTURE INNOVATIVE DEVELOPMENT
Autor: O. DMYTRIIEVA, Ya. LEVCHENKO
Publikováno v: Economics of the transport complex. :5
The strategic level of public management of transport infrastructure innovative development is characterized by a high degree of uncertainty in the assessment of the environment, weak formalization of management methods and widespread use of expert a
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ba7a0fe2d9d53e27ff7ed572c20483c2
https://doi.org/10.30977/etk.2225-2304.2021.38.5
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2
Acoustic Field Effect on Laminar Turbulent Transition on a Swept Wing in the Favorable Pressure Gradient Region
Autor: V. V. Kozlov, V. A. Shcherbakov, V. A. Sova, V. Ya. Levchenko
Publikováno v: Fluid Dynamics. 38:868-877
The development of disturbances in a three-dimensional boundary layer on a swept wing model is studied both under natural conditions and for artificial excitation of traveling waves by an acoustic field. It is found that steady-state streamwise struc
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::23bebe844207e5e8c32db43847c6a20a
https://doi.org/10.1023/b:flui.0000015227.07480.fa
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3
Experimental study of evolution of disturbances in a supersonic boundary layer on a swept-wing model under controlled conditions
Autor: Nikolay Semionov, V. Ya. Levchenko, Alexander D. Kosinov, Yu. G. Ermolaev
Publikováno v: Journal of Applied Mechanics and Technical Physics. 41:44-49
Experimental data on stability of a three-dimensional supersonic boundary layer on a swept wing are presented. Evolution of artificial wave trains was studied. The experiments were conducted for Mach numberM=2.0 and unit Reynolds numberRe 1=6.6·106m
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7c5557a89a8788027f194dcebe10e91e
https://doi.org/10.1007/bf02465235
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9
EXPERIMENTAL STUDY OF TURBULENCE BEGINNING AND TRANSITION CONTROL IN A SUPERSONIC BOUNDARY LAYER ON SWEPT WING
Autor: Nikolay Semionov, V. Ya. Levchenko, Alexander D. Kosinov
Publikováno v: Fluid Mechanics and Its Applications ISBN: 9781402034596
The paper is devoted to an experimental study of controlled disturbances evolution in supersonic boundary layer of swept wing. We obtained, that the evolution of disturbances at frequencies of 10, 20, and 30 kHz are similar to the development of trav
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e0a1524870e376d057ca0684e73ae82f
https://doi.org/10.1007/1-4020-4159-4_50
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10
Instability of a Three-Dimensional Supersonic Boundary Layer
Autor: Alexander D. Kosinov, V. Ya. Levchenko, N. V. Semionov, Yu. G. Ermolaev
Publikováno v: IUTAM Symposium on Nonlinear Instability and Transition in Three-Dimensional Boundary Layers ISBN: 9789401072618
Instability of three-dimensional boundary layers was studied intensively both theoretically and experimentally last decade [1, 2]. Such boundary layers take place, in particularly, on swept wings of airplanes in the regions of negative and positive p
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::68c827541e51440439325d911194541b
https://doi.org/10.1007/978-94-009-1700-2_34
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