A weakly nonlinear mechanism for mode selection in swirling jets

【Author】

Philippe Meliga;Francois Gallaire;Jean-Marc Chomaz;

【Abstract】

<正>The spiral vortex breakdown of nominally axisymmetric swirling flows observed in the three-dimensional direct numerical simulations of Ruith,Chen,Meiburg and Maxworthy is revisited and interpreted in terms of linearly unstable global modes.We show that increasing the swirl number results in successive Hopf bifurca-

【Keywords】

A weakly nonlinear mechanism for mode selection in swirling jets;

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