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传热学
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ISSN 打印: 1064-2285
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传热学

DOI: 10.1615/HeatTransRes.v29.i6-8.10
pages 362-373

Heat Transfer Downstream of Laminar, Transitional and Turbulent Flow Separations

Eleonora Ya. Epik
Institute of Engineering Thermophysics of National Academy of Sciences of Ukraine (IET NASU), 2a Zhelyabov Str., 03057, Kyiv, Ukraine
L. E. Yushina
Institute of Technical Thermophysics of the National Academy of Sciences of Ukraine, Kiev, Ukraine
Tatyana T. Suprun
Institute of Technical Thermophysics, National Academy of Sciences of Ukraine, Kiev, Ukraine

ABSTRACT

Experimental data are given for the velocity and temperature characteristics and for the structure of turbulence in the relaxation zone downstream of vari-ous-type separation for the case of low turbulence of the external flow Tue ≈ 0.2% and the velocity range Ue ≈ 5−10 m/s. The separation type (laminar, transitional or turbulent) is regulated by the external flow velocity, shape of the leading edge of the plate and length of an interceptor installed at the end of the working section of the wind tunnel. The experimental data attest to recovery of the dissimilarity of the internal structure and different rates of recovery of the hydrodynamic and thermal boundary layers in the relaxation zone.


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