On the stability of vortex rings

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 … Expand. 277. View 1 excerpt, references background; Save. Alert. WebThe 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] ...

The three‐dimensional vortex structure of an impacting water …

WebWidnall, S. & Sullivan, J. I973 On the stability of vortex rings. Proc. R. Soc. Lond. A 332, 335. Yuen, H. C. 1974 The stability of a vortex ring with axial flow, buoyancy forces and … 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 … green serpent mask found in mexico https://mandriahealing.com

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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 … 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 ... 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 … green series x controller

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Category:The structure and stability of vortex rings Semantic Scholar

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On the stability of vortex rings

The structure and stability of vortex rings Semantic Scholar

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 stability of a vortex ring in close proximity to another vortex ring. The analysis followed the approach used by Widnall & Sullivan (1973) for the long-wavelength …

On the stability of vortex rings

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Web19 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 … WebDownload scientific diagram Model of a turbocharger with floating-bearing rings. The sketch on the right-hand side shows a cross-section through a bearing which features an oil-inlet groove in ...

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 … WebA series of observations on experimentally produced vortex rings is described. The flow field, ring velocity and growth rate were observed using dye and hydrogen-bubble …

Web26 de abr. de 2006 · The stability of the secondary ring was investigated through complementary numerical experiments and stability analysis. Both perturbed and …

Web4 de set. de 2024 · It is shown that the vortex rings are subjected to curvature instability as predicted analytically by Blanco-Rodríguez & Le Dizès (J. Fluid Mech., vol. 814, 2024, …

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 … fmla paperwork umichWebOn the stability of vortex rings By SHEILA E. WIDNALL AND J. P. SULLIVAN Department of Aeronautics and Astronautics, Massachusetts Institute of Technology, Cambridge, … greenserve cleaning servicesWeb1 de jan. de 2004 · The linear stability of thin vortex rings are studied by short-wavelength stability analysis. The modified Hill–Schrödinger equation for vortex rings, which incorporates curvature effect, is ... fmla paperwork washington state 2023Web20 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 … greenservice88 outlook.comWebThe 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. fmla paperwork for stress and anxietyWebWidnall, S. & Sullivan, J. I973 On the stability of vortex rings. Proc. R. Soc. Lond. A 332, 335. Yuen, H. C. 1974 The stability of a vortex ring with axial flow, buoyancy forces and electric charges. 537. Title: A Note on the Stability of a … fmla paperwork to care for sick family memberWebOur numerical simulations reveal that the final distribution of winding numbers is narrower than the initial distribution of total phases, indicating an increased probability for no-vortex configurations. greenservice italia