Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Vladislav Ivashchenko"'
Publikováno v:
Thermophysics and Aeromechanics. 28:55-64
A turbulent circular jet with variable density caused by the mixing of air with gases of different densities (air, helium, and carbon dioxide) is studied. The Reynolds number is fixed for all cases: Re = 5300. Using proper orthogonal decomposition an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::09e96541a61e63cfb491d8ba0971376d
https://doi.org/10.1134/s0869864321010066
https://doi.org/10.1134/s0869864321010066
Autor:
Vladislav Ivashchenko, A. V. Seredkin, M. P. Tokarev, Vladimir M. Dulin, Maxim Bobrov, Dmitriy M. Markovich, Rustam Mullyadzhanov, Mikhail Hrebtov, Dinar Zaripov
Publikováno v:
14th International Symposium on Particle Image Velocimetry. 1
Lagrangian particle tracking Shake-the-box (STB) method (Schanz et al., 2016) acquires the 3D positions of tracer particles from the temporal sequences of their 2D projection images even for rather high seeding densities. Approximation of tracks by a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::69973b491170ddf26df1f4f0fde9fcf5
https://doi.org/10.18409/ispiv.v1i1.72
https://doi.org/10.18409/ispiv.v1i1.72
Autor:
Nikolay I. Mikheev, Renfu Li, Dinar Zaripov, Vladislav Ivashchenko, Christian J. Kähler, Rustam Mullyadzhanov
Publikováno v:
Journal of Fluid Mechanics. 923
We address the issue of the generation mechanism of near-wall reverse flow (NWRF) events in a fully developed turbulent duct flow using direct numerical simulations and particle image velocimetry at a relatively low Reynolds number (Cardesa et al., J
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc5b2bd60498c874ae05810b0a91209f
https://doi.org/10.1017/jfm.2021.526
https://doi.org/10.1017/jfm.2021.526
Autor:
Rustam Mullyadzhanov, Dinar Zaripov, Vladislav Ivashchenko, Renfu Li, Dmitriy M. Markovich, Christian J. Kähler
Publikováno v:
Physics of Fluids. 33:085130
In recent years, the near-wall reverse flow (NWRF) phenomenon taking place in wall-bounded turbulent flows has become the subject of comprehensive theoretical and experimental study. Currently, it is generally accepted that the NWRF events are caused
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f6ce5ac9e7985db6a58f85d10da9d106
https://doi.org/10.1063/5.0055859
https://doi.org/10.1063/5.0055859
Autor:
Vladislav Ivashchenko, Vladimir M. Dulin, A. V. Seredkin, Mikhail Hrebtov, Dinar Zaripov, M. P. Tokarev, Maxim Bobrov, Rustam Mullyadzhanov, Dmitriy M. Markovich
Publikováno v:
Measurement Science and Technology. 32:084014
The Lagrangian particle tracking shake-the-box (STB) method provides accurate evaluation of the velocity and acceleration of particles from time-resolved projection images for high seeding densities, giving an opportunity to recover the stress tensor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::03a4d73c1769001805d99933389b3a46
https://doi.org/10.1088/1361-6501/abf95c
https://doi.org/10.1088/1361-6501/abf95c
Publikováno v:
AIP Conference Proceedings.
We study round turbulent jets with variable density using Direct numerical simulations (DNS) and Spectral element method (SEM) for spatial discretization. A fully developed turbulent air pipe flow at a Reynolds number Re = 5300 enters the volume fill
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2282040264596b76e3ae1b1068383a3d
https://doi.org/10.1063/1.5065301
https://doi.org/10.1063/1.5065301
Publikováno v:
EPJ Web of Conferences, Vol 159, p 00041 (2017)
We perform Large-eddy simulations (LES) of the turbulent flow in a channel with isothermal heated walls with the temperature ratio equal to 2. The variable properties of the fluid are accounted for by using the low Mach number approximation. The Reyn
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ac944ae5bb5fc24f71381a5a9a21a5b7
https://doaj.org/article/d5cd329d9443434c9932c8744d2a76df
https://doaj.org/article/d5cd329d9443434c9932c8744d2a76df
Publikováno v:
Journal of Physics: Conference Series. 1382:012012
We study starting turbulent round jets with variable density using Direct numerical simulations (DNS). A fully developed turbulent air flow at constant Reynolds number Re = 5300 is injected to space, filled with air, carbon dioxide or helium with a s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c31708984b0c62b17bf3fea8456918b3
https://doi.org/10.1088/1742-6596/1382/1/012012
https://doi.org/10.1088/1742-6596/1382/1/012012
Publikováno v:
Journal of Physics: Conference Series. 1128:012016
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ade9a6b4d0f12b4b5788fd9e1b1287bb
https://doi.org/10.1088/1742-6596/1128/1/012016
https://doi.org/10.1088/1742-6596/1128/1/012016
Publikováno v:
Journal of Physics: Conference Series. 754:062009
We use the open-source code nek5000 to assess the accuracy of high-order spectral element large-eddy simulations (LES) of a turbulent channel flow depending on the spatial resolution compared to the direct numerical simulation (DNS). The Reynolds num
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::90ab3b525e414ce8206076c9c5963397
https://doi.org/10.1088/1742-6596/754/6/062009
https://doi.org/10.1088/1742-6596/754/6/062009