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of 690
pro vyhledávání: '"Katul, Gabriel G."'
Turbulent flows over a large surface area (S) covered by n obstacles experience an overall drag due to the presence of the ground and the protruding obstacles into the flow. The drag partition between the roughness obstacles and the ground is analyze
Externí odkaz:
http://arxiv.org/abs/2404.07893
The drag coefficient $C_d$ for a rigid and uniformly distributed rod canopy covering a sloping channel following the instantaneous collapse of a dam was examined using flume experiments. The measurements included space $x$ and time $t$ high resolutio
Externí odkaz:
http://arxiv.org/abs/2403.12232
Autor:
Allouche, Mohammad, Sevostianov, Vladislav I., Zahn, Einara, Zondlo, Mark, Dias, Nelson Luís, Katul, Gabriel G., Fuentes, Jose D., Bou-Zeid, Elie
Conventional and recently developed approaches for estimating turbulent scalar fluxes under stable conditions are evaluated. The focus is on methods that do not require fast scalar sensors such as the relaxed eddy accumulation (REA) approach, the dis
Externí odkaz:
http://arxiv.org/abs/2401.11756
A generalized logarithmic law for high-order moments of passive scalars is proposed for turbulent boundary layers. This law is analogous to the generalized log law that has been proposed for high-order moments of the turbulent longitudinal velocity a
Externí odkaz:
http://arxiv.org/abs/2212.04987
Publikováno v:
Boundary-Layer Meteorol. 186 (2023), 533-565
A persistent spatial organization of eddies is identified in the lowest portion of the stably-stratified planetary boundary layer. The analysis uses flow realizations from published large-eddy simulations (Sullivan et al., J Atmos Sci 73(4):1815-1840
Externí odkaz:
http://arxiv.org/abs/2207.10755
Autor:
Zhang, Quan, Liu, Xuanqi, Zhou, Kai, Zhou, Yang, Gentine, Pierre, Pan, Ming, Katul, Gabriel G.
Publikováno v:
In Remote Sensing of Environment 1 May 2024 305
Publikováno v:
J. Fluid Mech. 942 (2022) A33
The inertial subrange of turbulent scales is commonly reflected by a power law signature in ensemble statistics such as the energy spectrum and structure functions - both in theory and from observations. Despite promising findings on the topic of fra
Externí odkaz:
http://arxiv.org/abs/2108.12940
The coupling between wind-waves and atmospheric surface layer turbulence sets surface drag. This coupling is however usually represented through a roughness length. Originally suggested on purely dimensional grounds, this roughness length does not di
Externí odkaz:
http://arxiv.org/abs/2103.06655
Publikováno v:
In International Journal of Heat and Fluid Flow August 2023 102
Publikováno v:
Proceedings of the National Academy of Sciences of the United States of America, 2021 Aug . 118(35), 1-4.
Externí odkaz:
https://www.jstor.org/stable/27075300