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Second Symposium on Turbulence and Shear Flow Phenomena
June, 27-29, 2001, KTH, Stockholm, Sweden

DOI: 10.1615/TSFP2

TURBULENCE CHARACTERISTICS OF COUETTE-POISEUILLE TURBULENT FLOWS

pages 49-54
DOI: 10.1615/TSFP2.80
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RESUMO

Turbulence characteristics of Couette-Poiseuille turbulent flow (C-P flow) have been studied experimentally. In the wall region, turbulence characteristics are strongly influenced by dimensionless parameter of the shear stress gradient μ, but not much by Reynolds number Re*. In the core-region, however, there is a great difference in the distribution of turbulence intensity between P-and C-types. For P-type, an effective friction velocity and a new coordinate η = y−δp can be used for the universal profile, whereas for C-type, the local scaling and the wall coordinate y are adequate. For μ = 0~55, the sweep event contributes more to the Reynolds shear stress than that by ejection.

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