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Boundary layer in the vicinity of the stagnation point of a body of axial symmetry in a turbulent stream

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Abstract

The flow in the boundary layer in the vicinity of the stagnation point of a flat plate is examined. The outer stream consists of turbulent flow of the jet type, directed normally to the plate. Assumptions concerning the connection between the pulsations in velocity and temperature in the boundary layer and the average parameters chosen on the basis of experimental data made it possible to obtain an isomorphic solution of the boundary layer equations. Equations are obtained for the friction and heat transfer at the wall in the region of gradient flow taking into account the effect of the turbulence of the impinging stream. It is shown that the friction at the wall is insensitive to the turbulence of the impinging stream, while the heat transfer is significantly increased with an increase in the pulsations of the outer flow. These properties are confirmed by the results of experimental studies [1–4].

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Literature cited

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    I. P. Ginzburg, I. A. Belov, V. A. Zazimko, and V. S. Terpigor'ev, “Problem of the effect of turbulence characteristics on heat exchange of a supersonic jet with a flat barrier,” in: Heat and Mass Transfer [in Russian], Vol. 1, Énergiya, Minsk (1968).

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    I. A. Belov, G. F. Gorshkov, V. S. Komarov, and V. S. Terpigor'ev, “Experimental study of heat exchange of a subsonic jet with a normally located flat barrier,” Inzh.-Fiz. Zh.,20 (1971).

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    I. A. Belov and V. S. Terpigor'ev, “Allowance for turbulence in calculating heat exchange at the stagnation point of a jet interacting normally with a flat barrier,” Inzh.-Fiz. Zh.,17, No. 6 (1969).

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Translated from Zhurnal Prikladnoi Mekhaniki i Tekhnicheskoi Fiziki, No. 5, pp. 83–87, September–October, 1973.

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Terpigor'ev, V.S. Boundary layer in the vicinity of the stagnation point of a body of axial symmetry in a turbulent stream. J Appl Mech Tech Phys 14, 670–674 (1973). https://doi.org/10.1007/BF00856880

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Keywords

  • Experimental Data
  • Heat Transfer
  • Mathematical Modeling
  • Boundary Layer
  • Experimental Study