Zobrazeno 1 - 10
of 49
pro vyhledávání: '"L.S. Shtemenko"'
Publikováno v:
Moscow University Physics Bulletin. 74:256-261
Turbulent fluctuations of density and pressure in air and argon in a shock tube have been investigated, as well as their interaction with a shock wave reflected from a perforated plate at the end of the shock tube. The Mach number of the incident sho
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::68a7ba222d3c49429ebeadcd659baa72
https://doi.org/10.3103/s0027134919030056
https://doi.org/10.3103/s0027134919030056
Publikováno v:
Doklady Physics. 62:551-554
Turbulent fluctuations of density and pressure in air and argon in a shock tube have been investigated as well as their interaction with a shock wave reflected from a perforated plate at the end of a shock tube. Air and argon were used as test gases.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9ae8fa48b34ec6eaf050cc1b972d6c29
https://doi.org/10.1134/s1028335817120059
https://doi.org/10.1134/s1028335817120059
Autor:
L.S. Shtemenko, Fedor V. Shugaev, Oxana A. Nikolaeva, N. A. Suhareva, Dmitri Y. Cherkasov, Olga I. Dokukina
Publikováno v:
Optics in Atmospheric Propagation and Adaptive Systems XX.
The investigation was fulfilled on the basis of the Navier-Stokes equations for viscous heat-conducting gas. The Helmholtz decomposition of the velocity field into a potential part and a solenoidal one was used. We considered initial vorticity to be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8a0e9fb16d23ef4a0c278f1dc0cf7c7a
https://doi.org/10.1117/12.2278085
https://doi.org/10.1117/12.2278085
Publikováno v:
Moscow University Physics Bulletin. 68:118-122
The interaction of a shock wave with a turbulent air flow is investigated experimentally. The turbulence was created with the aid of a grid. On its reflection from a perforated disc the wave propagated through a turbulent flow. The Mach number of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::98c739d5ad049ca11f37b548e2c09d69
https://doi.org/10.3103/s0027134913020033
https://doi.org/10.3103/s0027134913020033
Akademický článek
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Autor:
L.S. Shtemenko, Oksana A. Nikolaeva, N. A. Suhareva, Fedor V. Shugaev, Anatoly P. Sukhorukov, T. I. Arsenyan
Publikováno v:
SPIE Proceedings.
Our approach for modeling laser beam propagation through turbulence involves parabolic equation method and results of experimental investigation in laboratory. The analytic solution to the problem of the Gaussian beam propagation through non-uniform
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0e0a20577d3dd932797d5c8158729e8f
https://doi.org/10.1117/12.2067188
https://doi.org/10.1117/12.2067188
Publikováno v:
Shock Waves. 9:31-35
A jet and vortices have been observed when a plane shock wave reflects from a concave body in a shock tube. If the cavity is deep enough then two reflected shocks appear near its edges. Air, carbon tetrafluoride (CF $_4$ ) and dichlorodifluoromethane
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b5ee981559e9be6de03f58cb4d008fd7
https://doi.org/10.1007/s001930050136
https://doi.org/10.1007/s001930050136
Publikováno v:
SPIE Proceedings.
Density oscillations in the vicinity of vortex rings in air have been investigated. The calculations were fulfilled on the basis of the Navier-Stokes equations. We used series expansions of unknown functions in powers of a parameter which characteriz
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7ac915fe4804f225d24c55ae413d80dd
https://doi.org/10.1117/12.2029156
https://doi.org/10.1117/12.2029156
Autor:
Oksana A. Nikolaeva, Fedor V. Shugaev, Oxana A. Solenaya, Evgeni N. Terentiev, L.S. Shtemenko
Publikováno v:
Optics in Atmospheric Propagation and Adaptive Systems XV.
The problem of the evolution of an ensemble of vortex rings in air has been solved. The full system of the Navier -Stokes equations was used. The parametrix method was applied. The calculations were performed for a wide range of the ring parameters (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ebe653685f9d5f4698f4592fea3ab36f
https://doi.org/10.1117/12.974548
https://doi.org/10.1117/12.974548
Autor:
L.S. Shtemenko, Oxana A. Nikolaeva, Fedor V. Shugaev, Tatiana Petrova, Oxana A. Solenaya, Olga I. Dokukina
Publikováno v:
SPIE Proceedings.
The improvement of the parametrix method for solving the full system of the Navier-Stokes is presented. As known the fundamental solution equation is an oscillatory one. These oscillations are observed while analyzing the density evolution. Their fre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::563e5a3f840403930068c0fbce808a6c
https://doi.org/10.1117/12.898108
https://doi.org/10.1117/12.898108