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Estimating turbulent fluxes in the tropical andes
(2020)
The correct estimation of Sensible Heat Flux (H) and Latent Heat Flux (LE) (i.e., turbulent fluxes) is vital in the understanding of exchange of energy and mass among hydrosphere, atmosphere, and biosphere in an ecosystem. ...
Influência da turbulência intermitente na estimativa dos fluxos de CO2 noturnos
(Universidade Federal de Santa MariaBRMeteorologiaUFSMPrograma de Pós-Graduação em Meteorologia, 2012-09-05)
Nocturnal turbulent flux data are analysed, initially for two experimental sites in Brazil, and later for a large variety of biomes. In such case, a wide dataset, originated from more than a hundred flux stations scattered ...
Modelo simplificado para turbulência na camada limite noturna
(Universidade Federal de Santa MariaBRFísicaUFSMPrograma de Pós-Graduação em Física, 2016-03-08)
The appropriate estimation of turbulent fluxes in very stable conditions is a great challenge
for numerical models that simulate the average behavior of the stable boundary layer.
Although many features of the flow are ...
Numerical simulation of the planetary boundary layer in Iperó, SP-BrazilSimulação numérica da camada limite planetária na região de Iperó, SP-Brasil
(2000-01-01)
One-dimensional second order numerical model coupled with surface budget energy prognostic equations is used to simulate the planetary boundary layer (PBL) in the region of Iperó-SP. Model results indicate that vertical ...
Convection in a rectangular channel with a flow of water in laminar-turbulent transition with high heat fluxes
(Planta Piloto de Ingeniería Química, 2010-02)
In this work we examine the phenomenon of laminar-turbulent transition in a heated rectangular channel under high heat fluxes and water as a working fluid. We use an experimental device that allows the electric heating of ...
Avaliação dos termos da equação de balanço de fluxo de energia cinética turbulenta
(Universidade Federal de Santa MariaCentro de Ciências Naturais e Exatas, 2015-07-09)
In this paper we propose a balance equation for turbulent flux of turbulent kinetic energy (TKE) in the planetary boundary layer (PBL) and its terms are evaluated through data generated by a numerical simulation model. ...
Aerosol properties, in-canopy gradients, turbulent fluxes and VOC concentrations at a pristine forest site in Amazonia
(PERGAMON-ELSEVIER SCIENCE LTD, 2010)
Aerosol physical and chemical properties were measured in a forest site in central Amazonia (Cuieiras reservation, 2.61S; 60.21W) during the dry season of 2004 (Aug-Oct). Aerosol light scattering and absorption, mass ...
DIFFUSION OF MAGNETIC FIELD AND REMOVAL OF MAGNETIC FLUX FROM CLOUDS VIA TURBULENT RECONNECTION
(IOP PUBLISHING LTD, 2010)
The diffusion of astrophysical magnetic fields in conducting fluids in the presence of turbulence depends on whether magnetic fields can change their topology via reconnection in highly conducting media. Recent progress ...
Simulations of turbulent channels with prescribed velocity profiles
(Cambridge University Press, 2013-05)
Direct numerical simulations of turbulent channels with artificially prescribed velocity profiles are discussed, using both natural and purposely incorrect profiles. It is found that turbulence develops correctly when ...