Zobrazeno 1 - 10
of 612
pro vyhledávání: '"Kleeorin, N."'
Publikováno v:
Physics of Fluids 36, 075131 (2024)
Based on a mean-field theory of a non-rotating turbulent convection (Phys. Rev. E {\bf 66}, 066305, 2002), we perform mean-field simulations (MFS) of sheared convection which takes into account an effect of modification of the turbulent heat flux by
Externí odkaz:
http://arxiv.org/abs/2404.11690
Autor:
Rogachevskii, I., Kleeorin, N.
Publikováno v:
Physics of Fluids 36, 026610 (2024)
The atmospheric convective boundary layer (CBL) consists of three basic parts: (i) the surface layer unstably stratified and dominated by small-scale turbulence of very complex nature; (ii) the CBL core dominated by the energy-, momentum- and mass-tr
Externí odkaz:
http://arxiv.org/abs/2311.13991
Publikováno v:
Monthly Notices of the Royal Astronomical Society 526, 1601-1612 (2023)
Our theoretical and numerical analysis have suggested that for low-mass main sequences stars (of the spectral classes from M5 to G0) rotating much faster than the Sun, the generated large-scale magnetic field is caused by the mean-field $\alpha^2\Ome
Externí odkaz:
http://arxiv.org/abs/2308.08957
Autor:
Rogachevskii, I., Kleeorin, N.
Publikováno v:
Monthly Notices of the Royal Astronomical Society 530, 382-392 (2024)
Solar, stellar and galactic large-scale magnetic fields are originated due to a combined action of non-uniform (differential) rotation and helical motions of plasma via mean-field dynamos. Usually, nonlinear mean-field dynamo theories take into accou
Externí odkaz:
http://arxiv.org/abs/2308.05590
Publikováno v:
Physics of Fluids 35, 095123 (2023)
We investigate experimentally phenomenon of turbulent thermal diffusion of micron-size solid particles in an inhomogeneous convective turbulence forced by one vertically-oriented oscillating grid in an air flow. This effect causes formation of large-
Externí odkaz:
http://arxiv.org/abs/2306.09053
Publikováno v:
Physics of Fluids 34, 105121 (2022)
It has been previously shown (Phys. Rev. E 66, 066305, 2002) that a non-rotating turbulent convection with nonuniform large-scale flows contributes to the turbulent heat flux. As a result, the turbulent heat flux depends explicitly not only on the gr
Externí odkaz:
http://arxiv.org/abs/2209.07477
Autor:
Kleeorin, N., Rogachevskii, I.
Publikováno v:
MNRAS 515, 5437-5448 (2022)
Combined action of helical motions of plasma (the $\alpha$ effect) and non-uniform (differential) rotation is a key dynamo mechanism of solar and galactic large-scale magnetic fields. Dynamics of magnetic helicity of small-scale fields is a crucial m
Externí odkaz:
http://arxiv.org/abs/2206.14152
Publikováno v:
Physics of Fluids 34, 055125 (2022)
We study experimentally turbulent thermal diffusion of small particles in inhomogeneous and anisotropic stably stratified turbulence produced by one oscillating grid in the air flow. The velocity fields have been measured using a Particle Image Veloc
Externí odkaz:
http://arxiv.org/abs/2202.13348
Publikováno v:
Physics of Fluids 34, 055126 (2022)
We perform experimental study of turbulent transport of nanoparticles in convective turbulence with the Rayleigh number $\sim 10^8$ in the air flow. We measure temperature field in many locations by a temperature probe equipped with 11 E-thermocouple
Externí odkaz:
http://arxiv.org/abs/2202.05071
Publikováno v:
Physics of Fluids 34, 116602 (2022)
The energy- and flux budget (EFB) turbulence closure theory for the atmospheric surface layers in convective and stably stratified turbulence has been developed using budget equations for turbulent energies and fluxes in the Boussinesq approximation.
Externí odkaz:
http://arxiv.org/abs/2112.14121