Search
Now showing items 11-20 of 4722
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 ...
Libro del mes: Alan Greenspan. Age of turbulence
(Revista Mensaje, 2018)
STUDY OF THE EQUATORIAL ATLANTIC OCEAN MIXING LAYER USING A ONE-DIMENSIONAL TURBULENCE MODEL
(INST OCEANOGRAFICO, UNIV SAO PAULO, 2010)
The General Ocean Turbulence Model (GOTM) is applied to the diagnostic turbulence field of the mixing layer (ML) over the equatorial region of the Atlantic Ocean. Two situations were investigated: rainy and dry seasons, ...
Characterizing inertial and convective optical turbulence by detrended fluctuation analysis
(Spie, 2013-10)
Atmospheric turbulence is usually simulated at the laboratory by generating convective free flows with hot surfaces, or heaters. It is tacitly assumed that propagation experiments in this environment are comparable to those ...
Transition to quantum turbulence in finite-size superfluids
(WILEY-BLACKWELL, 2011)
A novel concept of quantum turbulence in finite size superfluids, such as trapped bosonic atoms, is discussed. We have used an atomic (87)Rb Bose-Einstein condensate (BEC) to study the emergence of this phenomenon. In our ...
Incompressible energy spectrum in atomic Bose-Einstein condensates: a weak wave turbulence theory approach
(Universidade Federal de São CarlosUFSCarPrograma de Pós-Graduação em Física - PPGFCâmpus São Carlos, 2022-08-25)
Bose-Einstein condensates with their superfluidity property provide an interesting parallel to classical fluids. Due to the Kolmogorov spectrum of homogeneous turbulence the statistics of the incompressible velocity field ...
Wave turbulence buildup in a vibrating plate
(Springer, 2015-10)
We report experimental and numerical results on the buildup of the energy spectrum in wave turbulence of a vibrating thin elastic plate. Three steps are observed: first a short linear stage, then the turbulent spectrum is ...
Friction factor for turbulent flow in rough pipes from Heisenberg's closure hypothesis
(American Physical Society, 2009-05)
We show that the main results of the analysis of the friction factor for turbulent pipe flow reported by Gioia and Chakraborty [Phys. Rev. Lett. 96, 044502 (2006)] can be recovered by assuming the Heisenberg closure ...
The effect of buildings on atmospheric turbulence in open spaces in Western Sao Paulo State, Brazil
(Univ Politecnica Valencia, 2018-01-01)
This paper seeks to identify a pattern of air turbulence that reflects the effect of buildings on air turbulence characteristics measured in open spaces in Western Sao Paulo State, Brazil. Atmospheric turbulence was estimated ...