Abstract
Experimental data on heat transfer and friction in the presence of a bypass laminar-turbulent transition in a flow with an increased degree of turbulence Tue=3.2–7% are reported. It is shown that several types of bypass transition can occur depending on the turbulence scale: from laminar to turbulent, from pseudolaminar to quasiturbulent, and combination. It is established that the mechanism of the transition is related to the selective properties of the wall boundary layers developed in its presence. A tendency toward the development of an upper thermal transition in turbulized flows is established.
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Deceased.
Institute of Technical Thermophysics, National Academy of Sciences of Ukraine, Kiev, Ukraine. Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 69, No. 6, pp. 958–964, November-December, 1996.
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Dyban, E.P., Épik, É.Y. Heat transfer involving the laminar-turbulent transition and the enhanced turbulence of an external flow. J Eng Phys Thermophys 69, 726–733 (1996). https://doi.org/10.1007/BF02606106
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DOI: https://doi.org/10.1007/BF02606106