On the stability of vortex rings
WebExploratory measurements of the effect of a stable continuous vertical stratification on horizontally propagating vortex rings show that the rings are subject to a stratification induced instability and subsequent collapse, which forms a well mixed intrusion. For initial ring Froude numbersF 0=U 0/Nd 0=1.0–2.0, instability and collapse occurs when the … Web4 de jun. de 1998 · ABSTRACT. Observations are reported for the three‐dimensional vortex structure created by a dyed water drop impacting a pool of water. The structure and evolution of the vorticity is studied for a Weber number of 22–25 and a Froude number of 25–28. The drop and pool do not make first contact at the bottom of the drop but at …
On the stability of vortex rings
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WebThe structure and stability of vortex rings By T. MAXWORTHY Departments of Aerospace and Mechanical Engineering, University of Southern California, Los Angeles, … Web1 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.
Web29 de mar. de 2006 · Short-wave instabilities are discussed for both the vortex ring and the vortex pair. Instability for both the ring and the pair is predicted to occur whenever the … Web26 de abr. de 2006 · The stability of the secondary ring was investigated through complementary numerical experiments and stability analysis. Both perturbed and …
Web21 de nov. de 2016 · The stability of vortex rings with an azimuthal component of velocity is investigated numerically for various combinations of ring wavenumber and swirl magnitude. The vortex rings are equilibrated from an initially Gaussian distribution of azimuthal vorticity and azimuthal velocity, at a circulation-based Reynolds number of 10 … 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 …
Web4 de jun. de 1998 · Ring vortex evolution, from the initial roll‐up phase through to the final turbulent phase, was experimentally studied to see the dependence of its stirring properties on both the initial (accelerating, constant, decelerating, slow, fast) piston motion as well as on the boundary (tube/hole geometry) conditions. Stirring between fluid initially … destiny 2 new raid nameWebThis 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 ... destiny 2 new purpose perksWeb10 de nov. de 2024 · The vortex rings are equilibrated from an initially Gaussian distribution of azimuthal vorticity and azimuthal velocity, at a circulation-based Reynolds number of 10 000, to a state in which the ... chudax bikers shopWeb11 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 … chudaramma sathulara song lyricsWebVolcanoes 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 … chud artWeb29 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 … chuda weddingWeb19 de mar. de 2024 · Abstract—The problem of stability of steady-state thin vortex ring flow in an ideal fluid is studied in the linear approximation. The case of the isochronous vortex ring in which the liquid-particle rotation periods are identical is considered. In such a flow there are no perturbations of the continuous spectrum. This makes considerably … chud bucket