Thermophysics and Aeromechanics

, Volume 25, Issue 1, pp 47–54 | Cite as

Experimental investigation of the limits of ethanol combustion in the boundary layer behind an obstacle

  • B. F. Boyarshinov


Experimental data on the flow structure and mass transfer near the boundaries of the region existence of the laminar and turbulent boundary layers with combustion are considered. These data include the results of in-vestigation on reacting flow stability at mixed convection, mass transfer during ethanol evaporation “on the floor” and “on the ceiling”, when the flame surface curves to form the large-scale cellular structures. It is shown with the help of the PIV equipment that when Rayleigh–Taylor instability manifests, the mushroom-like structures are formed, where the motion from the flame front to the wall and back alternates. The cellular flame exists in a narrow range of velocities from 0.55 to 0.65 m/s, and mass transfer is three times higher than its level in the standard laminar boundary layer.


flame blow-off mixed convection combustion “on the ceiling” PIV method Rayleigh−Taylor instability mushroom-like structures 


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© Pleiades Publishing, Ltd. 2018

Authors and Affiliations

  1. 1.Kutateladze Institute of Thermophysics SB RASNovosibirskRussia

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