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Helical modes in swirling Jets

Abstract : The spiral form of vortex breakdown observed in the numerical simulations of Ruith et al. (2003) is interpreted as the consequence of the development of a so-called nonlinear global mode originating in the convective/absolute transition of the instability in the lee of the vortex breakdown bubble. This local theory gives an excellent prediction of the precession frequency measured in the threedimensional DNS. © 2006 Springer.
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Submitted on : Wednesday, July 16, 2014 - 9:19:58 PM
Last modification on : Saturday, June 25, 2022 - 11:14:33 PM

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Jean-Marc Chomaz, F. Gallaire. Helical modes in swirling Jets. SHIGEO KIDA. IUTAM Symposium on Elementary Vortices and Coherent Structures: Significance in Turbulence Dynamics, 79 (-), Springer, pp.265-271, 2006, Fluid Mechanics and Its Applications, 978-1-4020-4180-8. ⟨10.1007/1-4020-4181-0_31⟩. ⟨hal-01023361⟩

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