Combustion Limits of Foamed Emulsions with High Water Content
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We consider a new promising approach to the combustion of water-saturated hydrocarbon fuels in the form of foamed emulsions, stable combustion of which can sometimes be maintained at a water content above 90% mass %. Theoretical analysis and numerical simulations demonstrated the basic physical mechanism determining these broad combustibility limits, which consists in the natural spatial separation of the zones of fuel combustion and water evaporation. During combustion, the foam predominantly breaks up into emulsion drops. Nonstationary regimes of combustion are determined by the foam structure. The obtained data define applicability of the proposed concept of combustion of water-saturated foamed hydrocarbon emulsions.
Keywords:combustible foamed emulsions water-saturated hydrocarbon fuel flame propagation mechanisms numerical simulation.
This work was supported by the Russian Science Foundation, project no. 17-19-01392.
CONFLICT OF INTEREST
The authors declare that they have no conflict of interest.
- 2.M. A. Kurgankina, G. S. Nyashina, and P. A. Strizhak, Appl. Therm. Eng. 147, 998 (2019). https://doi.org/10.1016/j.applthermaleng.2018.10.133 CrossRefGoogle Scholar
- 6.I. Glassman, R. A. Yetter, and N. G. Glumac, Combustion (Academic, London, 2014).Google Scholar
- 9.K. N. Volkov and V. N. Emel’yanov, Particle Gas Flows (Fizmatlit, Moscow, 2008) [in Russian].Google Scholar
- 11.D. N. Pope and G. Gogos, Combust. Flame 142, 89 (2005). https://doi.org/10.1016/j.combustflame.2005.02.010 CrossRefGoogle Scholar