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Heat Transfer Research
インパクトファクター: 1.199 5年インパクトファクター: 1.155 SJR: 0.267 SNIP: 0.503 CiteScore™: 1.4

ISSN 印刷: 1064-2285
ISSN オンライン: 2162-6561

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Heat Transfer Research

DOI: 10.1615/HeatTransRes.v31.i5.30
pages 326-332

HEAT TRANSFER IN THE RELAXATION ZONE BEHIND LOCAL CLOSED 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

要約

The results of an experimental study of temperature and velocity characteristics in the relaxation zone behind separations of various types are presented for the case of low turbulence of an outer flow. A general approach to employment of dimensionless viscosity on the outer edge of a dynamic boundary layer as a parameter which determins intensity and type of separation (laminar, transient, turbulent) is worked-out and widely used at the Institute of Technical Thermophysics of the National Academy of Sciences of Ukraine. A method for calculating the heat transfer in the relaxation zone behind turbulent separation is suggested. The data obtained confirm nonadequacy of prediction of the internal structure and different velocities of recovery of thermal and hydrodynamic boundary layers in the relaxation zone.


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