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Turbulent Diffusion Behind a Heated Line Source in a Nearly Homogeneous Turbulent Shear Flow

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Turbulent Shear Flows 6

Abstract

The turbulent diffusion of heat from a line source has been examined in a nearly homogeneous turbulent shear flow with a uniform mean velocity gradient. Mean shear was generated in a wind tunnel using an array of parallel channels of transversely varying porosity. The dimensionless intensity of temperature fluctuations was found to decrease rapidly at large distances from the source, in agreement with the numerical predictions of a Lagrangian random walk model. Thus, it was confirmed that the shear tends to reduce the intensity of concentration fluctuations.

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Author information

Authors and Affiliations

  1. Univ. of Thessaloniki Dept. of Mech. Engineering, Greece, 540 06, Greece

    H. Stapountzis

  2. Cambridge University Engineering Dept., CB2 1PZ, UK

    R. E. Britter

Authors
  1. H. Stapountzis
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  2. R. E. Britter
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Editor information

Editors and Affiliations

  1. Centre National de Recherches Météorologiques, 42, Avenue Coriolis, 31057, Toulouse Cedex, France

    Jean-Claude André

  2. O.N.E.R.A./C.E.R.T., 2, Avenue Edouard Belin, 31055, Toulouse Cedex, France

    Jean Cousteix

  3. Lehrstuhl für Strömungsmechanik, Universität Erlangen-Nürnberg, Egerlandstraße 13, 8520, Erlangen, Fed. Rep. of Germany

    Franz Durst

  4. Department of Mechanical Engineering, University of Manchester, Institute of Science and Technology, PO Box 88, Manchester, M60 1QD, England

    Brian E. Launder

  5. Mechanical Engineering Department, The Pennsylvania State University, University Park, PA, 16802, USA

    Frank W. Schmidt

  6. Department of Mechanical Engineering, Imperial College of Science and Technology, Exhibition Road, London, SW7 2BX, England

    James H. Whitelaw

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© 1989 Springer-Verlag Berlin Heidelberg

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Stapountzis, H., Britter, R.E. (1989). Turbulent Diffusion Behind a Heated Line Source in a Nearly Homogeneous Turbulent Shear Flow. In: André, JC., Cousteix, J., Durst, F., Launder, B.E., Schmidt, F.W., Whitelaw, J.H. (eds) Turbulent Shear Flows 6. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-73948-4_10

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  • DOI: https://doi.org/10.1007/978-3-642-73948-4_10

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-73950-7

  • Online ISBN: 978-3-642-73948-4

  • eBook Packages: Springer Book Archive

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