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Flow over a system of several ribs under conditions of high free-stream turbulence

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Thermophysics and Aeromechanics Aims and scope

Abstract

Results of an experimental hydrodynamic and heat-transfer study of the turbulent separated flow developing over a system of several cross-flow ribs are reported. Conditions with low and high free-stream turbulence are considered. Visualization and heat-transfer data are presented, and a comparison for two turbulence levels is given. In the system of three or more ribs, a very unstable flow in the second inter-rib cell was observed under low-turbulence conditions. Under a high level of free-stream turbulence, the flow in the first inter-rib cell is unstable; this observation is supported by measured pressure distributions. Addition of each next rib makes the separation flow region behind the last rib and the pressure recovery region less extended, and decreases the coordinate at which the rate of heat transfer attains its maximum. In the high-turbulent flow, the heat-transfer intensification in the second inter-rib cell amounts to 30 %.

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Authors and Affiliations

  1. Kutateladze Institute of Thermophysics SB RAS, Novosibirsk, Russia

    V. I. Terekhov, N. I. Yarygina & Ya. I. Smul’sky

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  1. V. I. Terekhov
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  2. N. I. Yarygina
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  3. Ya. I. Smul’sky
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This work was financially supported by the Russian Foundation for Basic Research (Grants Nos. 04-02-16070 and 06-08-00300).

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Terekhov, V.I., Yarygina, N.I. & Smul’sky, Y.I. Flow over a system of several ribs under conditions of high free-stream turbulence. Thermophys. Aeromech. 13, 335–341 (2006). https://doi.org/10.1134/S0869864306030036

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  • DOI: https://doi.org/10.1134/S0869864306030036

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