Titlebook: Vortex Structure and Dynamics; Lectures of a Worksh Agnès Maurel,Philippe Petitjeans Conference proceedings 2000 Springer-Verlag Berlin Hei

青少年

Acoustic Characterization of a Stretched Vortex in an Infinite Medium,ows a dynamical tracking of the vortex. Experimental results on the mean vortex characteristics as a function of the control parameters are presented, together with some examples of transitory regimes and of precession motion.

爆米花

物質(zhì)

小故事

Three-Dimensional Instabilities of a Counterrotating Vortex Pair,ed by Crow [.],who showed that such a pair is unstable to perturbations which are symmetric with respect to the plane separating the vortices,and which have an axial wavelength of around eight vortex spacings. This result is in good agreement with the vortex structures observed in the contrails of real aircraft.

豐滿中國

高度

Pressure Measurements in a Stretched Vortex, some geometric characteristics of the probe (size, distance from the vortex) on the measured pressure, together with the influence of the presence of a probe on the vortex strength. We briefly discuss consequences of these observations on pressure measurements in the bulk of turbulent flows.

Cpap155

永久

Bursting of a Swirling Jet Stemming from a Localized Perturbation,turation of this primary instability. At the same time, the vortex bursts in the neighborhood of the initial perturbation location, where numerous linear instability modes grow in place, the interaction of which is likely to cause rapid vortex dissipation.

llibretto

百靈鳥