Results 31 to 40 of about 6,551 (166)
Aerospace, 2023 Laminar-to-turbulent transition in a swept flat-plate boundary layer is caused by the breakdown of the crossflow vortex via high-frequency secondary instability and is promoted by the wall-surface roughness and the freestream turbulence (FST).
Kosuke Nakagawa +2 more
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Advances in Mechanical Engineering, 2017 Many water-jet pumps have a suction velocity profile, which is non-uniform and unfavorable for the pump performance. This article applies the numerical method to investigate the generation mechanism of performance breakdown in a water-jet pump under non ...
Puyu Cao +4 more
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The Convective Features within and Surrounding Severe Tropical Cyclone Larry (2006)
Tropical Cyclone Research and Review, 2012 : A sequence of ground-based radar reflectivity images sampled in the 17 hours prior to, and during the landfall of Severe Tropical Cyclone Larry (2006) are presented and analyzed using Fourier and wavelet analysis techniques.
Peter Otto, Joshua Soderholm
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Vortex breakdown incipience: Theoretical considerations [PDF]
Physics of Fluids, 1995 The sensitivity of the onset and the location of vortex breakdowns in concentrated vortex cores, and the pronounced tendency of the breakdowns to move upstream have been characteristic observations of experimental investigations; they have also been features of numerical simulations and led to questions about the validity of these simulations.
Berger, S. A., Erlebacher, G.
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Numerical modelling of swirling diffusive flames
EPJ Web of Conferences, 2016 Computational Fluid Dynamics has been used to study the mixing and combustion of two confined jets whose setup and operating conditions are those of the benchmark of Roback and Johnson.
Parra-Santos Teresa +4 more
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Antarctic air over New Zealand following vortex breakdown in 1998 [PDF]
Annales Geophysicae, 2003 An ozonesonde profile over the Network for Detection of Stratospheric Change (NDSC) site at Lauder (45.0° S, 169.7° E), New Zealand, for 24 December 1998 showed atypically low ozone centered around 24 km altitude (600 K potential temperature).
J. Ajtic +7 more
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Wavelet Analysis of Vortex Breakdown [PDF]
, 2008 We study the quasi-periodic turbulent bursting of a laboratory produced isolated vortex immersed in laminar flow. We analyze the experimentally measured flow field using orthogonal wavelets to observe the time evolution of the bursting. The discrete wavelet transform is used to separate the flow field into a coherent component, capturing the dynamics ...
Ruppert-Felsot, Jori +2 more
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EFFECT OF SWEEP ANGLE ON THE VORTICAL FLOW OVER DELTA WINGS AT AN ANGLE OF ATTACK OF 10° [PDF]
Journal of Engineering Science and Technology, 2014 CFD simulations have been used to analyse the vortical flows over sharp edged delta wings with differing sweep angles under subsonic conditions at an angle of attack of 10°.
JAMES BRETT, ANDREW OOI
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New Theories on Boundary Layer Transition and Turbulence Formation
Modelling and Simulation in Engineering, 2012 This paper is a short review of our recent DNS work on physics of late boundary layer transition and turbulence. Based on our DNS observation, we propose a new theory on boundary layer transition, which has five steps, that is, receptivity, linear ...
Chaoqun Liu +3 more
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Vortex filaments and quantum turbulence
Comptes Rendus. Mécanique, 2020 After giving my personal recollections of my collaboration in the early 90’s with Yves Couder on the subject of vortex filaments in classical turbulence I argue that current insights in quantum turbulence can be used to shed some light on the problem of ...
Brachet, Marc
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