Journal of Fluid Mechanics

Focus on Fluids

Revisiting Taylor's hypothesis

P. MOINa1

a1 Center for Turbulence Research, Stanford University, Stanford, CA 94305, USA

Abstract

Taylor's hypothesis, relating temporal to spatial fluctuations in turbulent flows is investigated using powerful numerical computations by del Álamo & Jiménez (J. Fluid Mech., 2009, this issue, vol. 640, pp. 5–26). Their results cast doubt on recent interpretations of bimodal spectra in relation to very large-scale turbulent structures in experimental measurements in turbulent shear flows.

Keywords

  • Taylor's hypothesis;
  • turbulence;
  • channel flows;
  • convection velocity
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