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Zhurnal Tekhnicheskoi Fiziki, 2016, Volume 86, Issue 9, Pages 32–38
(Mi jtf6441)
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This article is cited in 4 scientific papers (total in 4 papers)
Gases and Fluids
Calculation of the drag and heat transfer from a sphere in the gas flow in a cylindrical channel
N. N. Simakov Yaroslavl State Technical University
Abstract:
A numerical experiment on the simulation of heat transfer from a sphere to a gas flow in a cylindrical channel in the Stokes and transient flow regimes has been described. Radial and axial profiles of the gas temperature and the dependences of drag coefficient $C_d$ of the body and Nusselt number Nu on Reynolds number Re have been calculated and analyzed. The problem of the influence of the early drag crisis for a sphere on its heat transfer to the gas flow has been considered. The estimation of this phenomenon has shown that the early drag crisis of the sphere in a strongly turbulent flow causes a reduction in heat transfer from the sphere to the gas by three to six times (in approximately the same proportion as for its drag coefficient).
Received: 16.09.2014 Revised: 09.06.2015
Citation:
N. N. Simakov, “Calculation of the drag and heat transfer from a sphere in the gas flow in a cylindrical channel”, Zhurnal Tekhnicheskoi Fiziki, 86:9 (2016), 32–38; Tech. Phys., 61:9 (2016), 1312–1318
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https://www.mathnet.ru/eng/jtf6441 https://www.mathnet.ru/eng/jtf/v86/i9/p32
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Abstract page: | 35 | Full-text PDF : | 9 |
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