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The Role of Coherent Structures in Modelling Turbulence and Mixing pp 304–332Cite as

The effects of reynolds number and pressure gradient on the transitional spot in a laminar boundary layer

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Part of the book series: Lecture Notes in Physics ((LNP,volume 136))

Abstract

The flow associated with the transitional spot is discussed in view of the possible relationship between the spot and the large coherent structure existing in a fully turbulent boundary layer. A brief review of the published results is given, yet the paper stresses new data. The entrainment of non-turbulent fluid into the spot is calculated on the plane of symmetry, taking into account the growth of the spot in the direction normal to the boundary. The effects of Reynolds number on the growth of the spot is discussed, as well as some effect of favourable pressure gradient. It was observed that the spot consists of an orderly array of eddies which give rise to the streaky structure in the spanwise direction.

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References

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Authors and Affiliations

  1. School of Engineering, Tel-Aviv University, Ramat-Aviv, Israel

    I. Wygnanski

Authors
  1. I. Wygnanski
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J. Jimenez

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© 1981 Springer-Verlag

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Wygnanski, I. (1981). The effects of reynolds number and pressure gradient on the transitional spot in a laminar boundary layer. In: Jimenez, J. (eds) The Role of Coherent Structures in Modelling Turbulence and Mixing. Lecture Notes in Physics, vol 136. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-10289-2_32

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  • DOI: https://doi.org/10.1007/3-540-10289-2_32

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-10289-2

  • Online ISBN: 978-3-540-38425-0

  • eBook Packages: Springer Book Archive

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