Abstract:
The effect of turbulization of a subsonic air flow on the boundary-layer structure was experimentally studied during evaporation and combustion of ethanol behind an obstacle 3–6 mm high. It is shown that turbulization increases the thermal boundary-layer thickness by a factor of 2, where as the dynamic boundary-layer thickness changes weakly. For 1–18% turbulence at the entrance, the change in the momentum thickness along the channel is close to the change in the momentum thickness for a laminar isothermal boundary layer without injection. Local regions of elevated turbulence with a high intensity of heat and mass transfer arise in the case of combustion behind the obstacle at a distance of 40–50 obstacle heights.
Citation:
B. F. Boyarshinov, V. I. Titkov, “Effect of free-stream turbulence on the boundary-layer structure with diffusion combustion of ethanol”, Prikl. Mekh. Tekh. Fiz., 42:6 (2001), 55–63; J. Appl. Mech. Tech. Phys., 42:6 (2001), 972–978
\Bibitem{BoyTit01}
\by B.~F.~Boyarshinov, V.~I.~Titkov
\paper Effect of free-stream turbulence on the boundary-layer structure with diffusion combustion of ethanol
\jour Prikl. Mekh. Tekh. Fiz.
\yr 2001
\vol 42
\issue 6
\pages 55--63
\mathnet{http://mi.mathnet.ru/pmtf2844}
\elib{https://elibrary.ru/item.asp?id=17265476}
\transl
\jour J. Appl. Mech. Tech. Phys.
\yr 2001
\vol 42
\issue 6
\pages 972--978
\crossref{https://doi.org/10.1023/A:1012505625694}
Linking options:
https://www.mathnet.ru/eng/pmtf2844
https://www.mathnet.ru/eng/pmtf/v42/i6/p55
This publication is cited in the following 3 articles:
Viktor I. Terekhov, “Heat Transfer in Highly Turbulent Separated Flows: A Review”, Energies, 14:4 (2021), 1005
B. F. Boyarshinov, “Effect of heat transfer on the distributions of OH and CH radicals in the boundary layer with ethanol combustion”, Combustion, Explosion and Shock Waves, 44:6 (2008), 619–626
B. F. Boyarshinov, V. I. Titkov, S. Yu. Fedorov, “Distribution of OH and CH radicals in the boundary layer with ethanol combustion”, Combustion, Explosion and Shock Waves, 41:4 (2005), 379–385
Citation in format AMSBIB
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