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Enhancement of turbulent mixing by a porous obstruction

Dana Duong and Stavros Tavoularis*

  • Department of Mechanical Engineering, University of Ottawa, Ottawa, Ontario, Canada K1N 6N5

  • *stavros.tavoularis@uottawa.ca
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Phys. Rev. Fluids 7, 124502 – Published 16 December, 2022

DOI: https://doi.org/10.1103/PhysRevFluids.7.124502

Abstract

Turbulent diffusion and mixing of heat, introduced passively by a thin ribbon in grid-generated turbulence, were enhanced drastically by a small array of thin cylinders, positioned closely downstream of the ribbon. A multistructure flow region was formed behind the array and relaxed towards grid turbulence, albeit maintaining a turbulence intensity and an integral length scale that were twice as large as those in the absence of the array.

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Outline

Information

Phys. Rev. Fluids 7, 124502– Published 16 December, 2022
  • Received 10 August 2022
  • Accepted 28 November 2022
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