On the stability of vortex rings

Web12 de abr. de 2024 · An on-chip integrated visible microlaser is a core unit of visible-light communication and information-processing systems and has four requirements: robustness against fabrication errors, a compressible linewidth, a reducible threshold, and in-plane emission with output light directly entering signal waveguides and photonic circuits ( 10, … WebLinear Stability of Inviscid Vortex Rings to Axisymmetric Perturbations Bartosz Protas∗ Department of Mathematics and Statistics, McMaster University Hamilton, Ontario, L8S 4K1, Canada October 31, 2024 Abstract We consider the linear stability to axisymmetric perturbations of the family of inviscid vortex rings discovered by Norbury (1973).

On the Stability of Vortex Rings - NASA/ADS

Web1 de mar. de 2015 · A circular vortex ring exhibits instabilities which have been recognized for many years, but whose precise boundaries we determine for the first … Web4 de jun. de 1998 · A joint experimental and computational methodology is developed and applied to investigate a vortex ring impinging normally on a wall. The method uses digital particle image velocimetry to make planar flow measurements, which are then used to initialize a second‐order finite difference calculation. The experiment and the simulation … phoebe sorial spota https://thecykle.com

The structure and stability of vortex rings Semantic Scholar

WebVolcanoes blow smoke rings and they do it rarely, because they require such precise conditions to form. This one is produced by Mount Etna on May 2nd, 2024 #Physics: Smoke rings are formed when a puff of smoke is expelled from a circular opening, creating a vortex ring of swirling air.The vortex ring is a stable, self-contained, toroidal structure … WebIn nature, vortex rings are found to occur in various shapes and sizes. Perhaps the most familiar example is the smoke-ring which is produced when cigarette smoke is... Skip to main ... Widnall, S. E. and Sullivan, J. P. 1973 On the stability of vortex rings. Proc. Roy. Soc. London A332, 335–353. ADS Google Scholar Web13 de abr. de 2024 · To overcome this problem, vortex cut and vortex ring models can be used to handle the discontinuous potential on the toroidal bubble surface. In this work, we compare these two models applied to toroidal bubble dynamics in a free field and near a rigid wall in terms of bubble profile, bubble gas pressure, and dynamic pressure induced … phoebe sorial

Strings, vortex rings, and modes of instability - ScienceDirect

Category:New Instability of a Thin Vortex Ring in an Ideal Fluid

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On the stability of vortex rings

The instability of the thin vortex ring of constant vorticity ...

Web11 de abr. de 2013 · We also find solutions for the problem of three vortex rings, which describe both the regular and chaotic leapfrogging motion of vortex rings. ... A Note on the Stability of a Vortex Ring of Small … Web20 de abr. de 2006 · Abstract. The evolution of a vortex ring in an ideal fluid under self-induction from a flat and elliptic configuration is followed numerically using the cut-off …

On the stability of vortex rings

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WebThe stability of vortex rings is investigated both theoretically and experimentally. The theoretical analysis considers the stability of the vortex-filament ring of small but finite … Web29 de mar. de 2006 · Abstract. A series of observations on experimentally produced vortex rings is described. The flow field, ring velocity and growth rate were observed using dye …

WebThe stability of vortex rings is investigated both theoretically and experimentally. The theoretical analysis considers the stability of the vortex-filament ring of small but finite core size in an inviscid fluid to small sinusoidal displacements of its centreline. Web30 de nov. de 2024 · Abstract. Vortex rings are remarkably stable structures that occur in a large variety of systems, such as in turbulent gases (where they are at the origin of weather phenomena) 1, fluids (with ...

WebInstead of blindly pursuing the lightweight of the mount body, ZWO is more so along the lines of stability for an entire use. 8kg-13kg payload. The load capacity of AM3 without the counterweight is 8kg and 13kg with the counterweight. * The counterweight should be secured on a counterweight bar of no more than 20cm in length. Web27 de mar. de 1973 · Attention was also given to the stability of vortex rings at this time, with analytical (Widnall and Sullivan (1973), Widnall et al. (1974), Widnall and Tsai …

WebThe work focuses on the problem of stability and viscous decay of single vortex rings. A tentative classification scheme is proposed for vortex rings which is based on extensive hot-wire measurements of velocity in the ring core and wake, and flow visualization, viz. laminar, wavy, turbulence-producing, and turbulent. Prediction of vortex ring type is …

WebThis one is produced by Mount Etna on May 2nd, 2024 #Physics: Smoke rings are formed when a puff of smoke is expelled from a circular opening, creating a vortex ring of swirling air. The vortex ... ttc 86 bus routeWebThe stability and development of vortex rings have been the subject of numerous theoretical [6,7,8,9,10,11] and experimental [12,13,14,15] ... ttc 88aWeb17 de dez. de 2015 · DOI: 10.2991/JIMET-15.2015.209 Corpus ID: 59484713; Influence of Structure Parameters and Velocity on Inflation Performance of Vortex Ring Parachute @inproceedings{Xiaodong2015InfluenceOS, title={Influence of Structure Parameters and Velocity on Inflation Performance of Vortex Ring Parachute}, author={Ma Xiaodong and … phoebe soundsWebThe circulation of a steady vortex ring ζis given by 1 2π Z R3 ζ(x)dx. A steady vortex ring ζis said to be centralized if ζis symmetric non-increasing in z, namely, ζ(r,z) = ζ(r,−z), and … ttc 925 bus routeWebThe solution to 0 (e 2) is presented, although the details of the stability analysis are carried through completely only for a special class of bending waves that are known to be … phoebe sparrow wagnerWeb1 de nov. de 2016 · Two types of vortex rings are considered: Kelvin's vortex ring and a Gaussian vortex ring. For Kelvin's vortex ring the maximum first-order growth rate is found to be 1.65/2.56. phoebe sparrow agephoebe solar