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  • Cited by 5
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    This article has been cited by the following publications. This list is generated based on data provided by CrossRef.

    Davis, M. R. 1982. Coherence between large-scale jet-mixing structure and its pressure field. Journal of Fluid Mechanics, Vol. 116, Issue. -1, p. 31.


    Lakshmana Gowda, B. H. and Aswatha Narayana, P. A. 1980. An experimental investigation of separating flow on a convex surface. Applied Scientific Research, Vol. 36, Issue. 4, p. 271.


    Ramaprian, B. R. and Tu, Shuen-Wei 1980. An experimental study of oscillatory pipe flow at transitional Reynolds numbers. Journal of Fluid Mechanics, Vol. 100, Issue. 03, p. 513.


    Davis, M. R. and Davies, P. O. A. L. 1979. Shear fluctuations in a turbulent jet shear layer. Journal of Fluid Mechanics, Vol. 93, Issue. 02, p. 281.


    Launder, B.E. and Rodi, W. 1979. The turbulent wall jet. Progress in Aerospace Sciences, Vol. 19, p. 81.


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Turbulence measurements in an ‘equilibrium’ axisymmetric wall jet

  • B. R. Ramaprian (a1)
  • DOI: http://dx.doi.org/10.1017/S0022112075002601
  • Published online: 01 March 2006
Abstract

This paper reports measurements of turbulent quantities in an axisymmetric wall jet subjected to an adverse pressure gradient in a conical diffuser, in such a way that a suitably defined pressure-gradient parameter is everywhere small. Self-similarity is observed in the mean velocity profile, as well as the profiles of many turbulent quantities at sufficiently large distances from the injection slot. Autocorrelation measurements indicate that, in the region of turbulent production, the time scale of ν fluctuations is very much smaller than the time scale of u fluctuations. Based on the data on these time scales, a possible model is proposed for the Reynolds stress. One-dimensional energy spectra are obtained for the u, v and w components at several points in the wall jet. It is found that self-similarity is exhibited by the one-dimensional wavenumber spectrum of $\overline{q^2}(=\overline{u^2}+\overline{v^2}+\overline{w^2})$, if the half-width of the wall jet and the local mean velocity are used for forming the non-dimensional wavenumber. Both the autocorrelation curves and the spectra indicate the existence of periodicity in the flow. The rate of dissipation of turbulent energy is estimated from the $\overline{q^2}$ spectra, using a slightly modified version of a previously suggested method.

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Journal of Fluid Mechanics
  • ISSN: 0022-1120
  • EISSN: 1469-7645
  • URL: /core/journals/journal-of-fluid-mechanics
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