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Mostrando ítems 41-50 de 2005
Evaluation of effective eddy diffusive coefficients using radar observations of turbulence in the stratosphere
(American Geophysical Union, 1984-03)
Radar observations show that thin persistent layers of turbulence occur sporadically in the troposphere and stratosphere. Two probabilistic approaches are used to show that the vertical eddy diffusivity due to such layers ...
Balanços de momentos estatísticos de segunda ordem na camada limite atmosférica diurna e noturna em função do vento
(Universidade Federal de Santa MariaBrasilMeteorologiaUFSMPrograma de Pós-Graduação em MeteorologiaCentro de Ciências Naturais e Exatas, 2021-10-28)
The study presents an observational analysis of the terms in the budgets of three planetary
boundary-layer second-order statistical moments: turbulent kinetic energy (TKE), heat flux
and temperature variance. These have ...
DYNAMIC ANALYSIS OF A SIMPLIFIED MODEL FOR THE ATMOSPHERIC NOCTURNAL BOUNDARY LAYERAnálise Dinâmica de um Modelo Simplificado para a Camada Limite Atmosférica Noturna
(Universidade Federal de Santa Maria, 2016)
External Weather Data Assimilation to Simulate Wind and Temperature Fields in the Region of Gualeguaychú, Argentina
(Scientific & Academic Publishing Co, 2014-11)
This work shows the comparison between the results of wind and temperature simulation and data weather measurements in low layers near Gualeguaychú City, Argentine, for 12 h in January 1, 2011. The model ARPS (advanced ...
An asymptotic approach for shock-wave/transpired turbulent boundary layer interactions
(ElsevierBrasilNúcleo Interdisciplinar de Dinâmica dos Fluidos, 2019)
Approximate solution for non-darcy transient film condensation in a porous medium
(1997-12-01)
The problem of non-darcian transient film condensation adjacent to a vertical flat plate embedded in a porous medium has been considered. The governing equation for the boundary layer thickness was obtained by an integral ...
The effect of compressibility on the primary global instability of unforced laminar separation bubbles
(2019-12-01)
Laminar separation bubbles present a three-dimensional self-excited instability mechanism which leads to the appearance of spanwise-periodic structures. In incompressible flow, this mechanism was found to become active at ...
Spectral proper orthogonal decomposition and resolvent analysis of near-wall coherent structures in turbulent pipe flows
(2020-01-01)
Direct numerical simulations, performed with a high-order spectral-element method, are used to study coherent structures in turbulent pipe flow at friction Reynolds numbers and. The database was analysed using spectral ...
Transient thermal boundary layers over rough surfaces
(ElsevierBrasilNúcleo Interdisciplinar de Dinâmica dos Fluidos, 2019)