Zobrazeno 1 - 10
of 1 001
pro vyhledávání: '"Elperin, T."'
Autor:
Barel, L., Eidelman, A., Elperin, T., Fleurov, G., Kleeorin, N., Levy, A., Rogachevskii, I., Shildkrot, O.
Publikováno v:
Physics of Fluids, v. 32, 095105 (2020)
Convection over a wavy heated bottom wall in the air flow has been studied in experiments with the Rayleigh number $\sim 10^8$. It is shown that the mean temperature gradient in the flow core inside a large-scale circulation is directed upward, that
Externí odkaz:
http://arxiv.org/abs/1811.10388
Publikováno v:
Phys. Rev. E 96, 033106 (2017)
We develop a theory of three-dimensional slow Rossby waves in rotating spherical density stratified convection. The Rossby waves with frequencies which are much smaller than the rotating frequency, are excited by a non-axisymmetric instability from t
Externí odkaz:
http://arxiv.org/abs/1705.06207
Publikováno v:
Physical Review E 96 (5), 053111 (2017)
The theory of turbulent diffusion of chemically reacting gaseous admixtures developed previously (Phys. Rev. E {\bf 90}, 053001, 2014) is generalized for large yet finite Reynolds numbers, and the dependence of turbulent diffusion coefficient versus
Externí odkaz:
http://arxiv.org/abs/1612.02585
Publikováno v:
Physical Review Fluids 2 (6), 064605 (2017)
Turbulent thermal diffusion is a combined effect of the temperature stratified turbulence and inertia of small particles. It causes the appearance of a non-diffusive turbulent flux of particles in the direction of the turbulent heat flux. This non-di
Externí odkaz:
http://arxiv.org/abs/1608.05030
Publikováno v:
Physics of Fluids, Volume 26, Issue 10, id.105106 (2014)
We investigated experimentally stably stratified turbulent flows in a lid driven cavity with a non-zero vertical mean temperature gradient in order to identify the parameters governing the mean and turbulent flows and to understand their effects on t
Externí odkaz:
http://arxiv.org/abs/1405.5933
Autor:
Elperin, T., Kleeorin, N., Krasovitov, B., Kulmala, M., Liberman, M., Rogachevskii, I., Zilitinkevich, S.
Publikováno v:
Physical Review E, 2015, v. 92, 013012
Condensation of water vapor on active cloud condensation nuclei produces micron-size water droplets. To form rain, they must grow rapidly into at least 50-100 $\mu$m droplets. Observations show that this process takes only 15-20 minutes. The unexplai
Externí odkaz:
http://arxiv.org/abs/1312.3250
We present results of the study of a turbulent air flow with a large scale circulation in Rayleigh-Benard rectangular convective cell with a heated bottom wall and a cooled top wall. The mean horizontal velocity of the main roll and the mean vorticit
Externí odkaz:
http://arxiv.org/abs/1312.1236
Publikováno v:
Physics of Fluids 25, 015111 (2013)
We study experimentally temperature fluctuations in stably stratified forced turbulence in air flow. In the experiments with an imposed vertical temperature gradient, the turbulence is produced by two oscillating grids located nearby the side walls o
Externí odkaz:
http://arxiv.org/abs/1207.5163
Publikováno v:
Boundary-Layer Meteorology 146, 341-373 ( 2013)
In this paper we advance physical background of the energy- and flux-budget turbulence closure based on the budget equations for the turbulent kinetic and potential energies and turbulent fluxes of momentum and buoyancy, and a new relaxation equation
Externí odkaz:
http://arxiv.org/abs/1110.4994
Publikováno v:
Physical Review E 83, 036302 (2011)
We study experimentally and theoretically transition phenomena caused by the external forcing from Rayleigh-Benard convection with the large-scale circulation (LSC) to the limiting regime of unstably stratified turbulent flow without LSC whereby the
Externí odkaz:
http://arxiv.org/abs/0912.2588