Physics > Fluid Dynamics
[Submitted on 25 Jun 2012
]
Title: Dual local and non-local cascades in 3D turbulent Beltrami flows
Title: 三维湍流贝特拉米流中的局部和非局部级联
Abstract: We discuss the possibility of dual local and non-local cascades in a 3D turbulent Beltrami flow, with inverse energy cascade and direct helicity cascade, by analogy with 2D turbulence. We discuss the corresponding energy spectrum in both local and non-local case. Comparison with a high Reynolds number turbulent von Karman flow is provided and discussed.
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