Results 41 to 50 of about 56,251 (190)
An inviscid model for the vortex-street wake [PDF]
, 1982 An inviscid model for the Karman vortex street, containing vortices of uniform vorticity surrounded by irrotational fluid, is related to the wake behind a bluff body by a global analysis requiring the conservation of momentum, energy and vorticity.
Saffman, P. G., Schatzman, J. C.
core +1 more source
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
doaj +1 more source
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.
openaire +2 more sources
On velocity structure functions and the spherical vortex model for isotropic turbulence [PDF]
, 2001 We investigate a stochastic model for homogeneous, isotropic turbulence based on Hill's spherical vortex. This is an extension of the method of Synge and Lin [Trans. R. Soc. Can.
Aivazis, Keri A., Pullin, D. I.
core +1 more source
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
doaj +1 more source
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
doaj +1 more source
On the shock transition, the hydraulic jump, and vortex breakdown [PDF]
, 1967 The normal shock, hydraulic jump, and vortex breakdown have a common feature: they are all marked by a transition from a supercritical to a subcritical flow state.
Hsieh, Din-Yu
core
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
openaire +2 more sources
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
doaj
Numerical simulation of vortex breakdown by the vortex-filament method [PDF]
The vortex filament method was applied to the simulation of vortex breakdown. The principal vortex region was represented by multiple filaments, and an axial velocity component was induced by a spiral winding of the filaments.
Leonard, A. +2 more
core +1 more source