Zobrazeno 1 - 10 of 151 pro vyhledávání: '"A. N. Vulfson"'
2
Local Similarity Theory of Convective Turbulent Layer Using 'Spectral' Prandtl Mixing Length and Second Moment of Vertical Velocity
Autor: Petr Nikolaev, A. N. Vulfson
Publikováno v: Journal of the Atmospheric Sciences. 79:101-118
Approximations of the turbulent moments of the atmospheric convective boundary layer are constructed based on a variant of the local similarity theory. As the basic parameters of this theory, the second moment of vertical velocity and the “spectral
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::eec8b4b144bcd6aaf8f019c7c5bddb41
https://doi.org/10.1175/jas-d-20-0330.1
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3
Linear Approximations of the Second Turbulent Moments of the Atmospheric Convective Surface Layer in a Forced-Convection Sublayer
Autor: P. V. Nikolaev, A. N. Vulfson
Publikováno v: Izvestiya, Atmospheric and Oceanic Physics. 54:472-479
The Monin–Obukhov similarity theory for the convective surface layer distinguishes two limiting cases: a dynamic limit and a free-convection limit. The dynamic limit for the convective surface layer is defined as a flow with a logarithmic profile o
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c822eef87a833f0b94e1cb3f06b2cec4
https://doi.org/10.1134/s0001433818050134
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4
Integral bubble and jet models with pressure forces
Autor: A. N. Vulfson, P. V. Nikolaev
Publikováno v: Izvestiya, Atmospheric and Oceanic Physics. 53:419-427
Modifications of integral bubble and jet models including the pressure force are proposed. Exact solutions are found for the modified model of a stationary convective jet from a point source of buoyancy and momentum. The exact solutions are compared
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::91019d36fe3d16471314d4eb3bc046a7
https://doi.org/10.1134/s0001433817040120
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5
Linear Approximations of Turbulent Moments of Horizontal Velocity and Temperature Fluctuations Within a Forced Convection Sublayer of the Atmospheric Surface Layer
Autor: Petr Nikolaev, A. N. Vulfson
Publikováno v: Springer Proceedings in Earth and Environmental Sciences ISBN: 9783030115326
In the convective surface layer a heavy forced convection sublayer is distinguished. The turbulent moments of this sublayer depend mainly on the buoyance flux. It is shown that “linear” approximations are effective for describing turbulent moment
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f2ebf9f57f6b3f2cc9514ef7602b9410
https://doi.org/10.1007/978-3-030-11533-3_35
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8
Problem of transient turbulent convection and a semiempirical profile of turbulent heat exchange coefficient in freshwater bodies
Autor: A. N. Vulfson, O. O. Borodin
Publikováno v: Water Resources. 43:640-646
A problem of convective cooling of both freshwater and saltwater lake is formulated. A transient one-dimensional turbulent model with variable layer depth is proposed to describe the process of freezing. The dependence of layer depth on time is deter
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::04c87b363dab397750d4d6ef1cb539f2
https://doi.org/10.1134/s0097807816040175
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9
System of convective thermals as a generalized ensemble of Brownian particles
Autor: O. O. Borodin, A. N. Vulfson
Publikováno v: Physics-Uspekhi. 59:109-120
The system of thermals that makes the fine structure of a turbulent convective layer of a fluid is considered. A simplified probabilistic-geometrical approach is outlined that uses measurements along the observation line to determine the average in-p
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::80222c14566553c48dad73d9d5dc5332
https://doi.org/10.3367/ufne.0186.201602a.0113
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10
On the stability of Maxwell distribution for a system of thermals in turbulent convective layers of fresh and salt water bodies
Autor: A. N. Vulfson, O. O. Borodin
Publikováno v: Water Resources. 43:66-72
An ensemble of cold thermals in a convective layer of a fresh or salt water body is considered. The probability distribution density of the vertical velocities of thermals is assumed to satisfy the K-form of Fokker−Planck equation. The K-form of th
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b98acfde1b2849ffa87598757a06abf8
https://doi.org/10.1134/s0097807816010152
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