Large-Eddy simulation of non-homogeneous turbulence subjected to sudden distortion

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In this paper we investigate the distortion of an unsteady flow through a two-dimensional sudden area expansion using LargeEddy Simulations. We perform a series of numerical experiments at various Mach numbers (Mb = (0.1, 0.5)) based on the inlet volume flow rate and fixed O(1) contraction ratio. At Mb = 0.1, we find that the transverse components of the auto-correlation of the two-point time-delayed velocity correlation tensor de-correlates slower in the downstream expansion compared to the channel section. We discuss this result in the context of classical and rapid-distortion theory.
Original languageEnglish
Number of pages2
Publication statusPublished - 28 Oct 2020
EventSeventeenth International Conference on Flow Dynamics - Virtual Conference and Tohoku University, Sendai, Japan
Duration: 28 Oct 202030 Oct 2020


ConferenceSeventeenth International Conference on Flow Dynamics
Abbreviated titleICFD17 2020
Internet address


  • aeroacoustics
  • trailing edge noise
  • rapid-distortion theory
  • optimization


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