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Experimental verification of the early crisis of drag using a single sphere

  • Theoretical and Mathematical Physics
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Abstract

The recently discovered phenomenon of drag anomaly (early crisis) observed for droplets in a two-phase turbulent flow at transition Reynolds numbers (Re = 10–100) is experimentally supported in the case of a gas flow about a single hard sphere as well. Using a specially designed torsion balance, the drag force of a foam plastic sphere 3 mm in diameter placed in a blower-produced turbulent jet is measured. It is found that the turbulence of the flow about the sphere must be high for the drag anomaly to arise.

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Authors and Affiliations

  1. Yaroslavl State Technical University, Moskovskii pr. 88, Yaroslavl, 150023, Russia

    N. N. Simakov

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  1. N. N. Simakov
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Correspondence to N. N. Simakov.

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Original Russian Text © N.N. Simakov, 2010, published in Zhurnal Tekhnicheskoĭ Fiziki, 2010, Vol. 80, No. 7, pp. 1–7.

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Simakov, N.N. Experimental verification of the early crisis of drag using a single sphere. Tech. Phys. 55, 913–919 (2010). https://doi.org/10.1134/S1063784210070017

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  • DOI: https://doi.org/10.1134/S1063784210070017

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