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Distribution of products around a burning droplet: an analytical approach

Annamalai, K and Rao, VK and Sreenath, AV (1971) Distribution of products around a burning droplet: an analytical approach. In: Combustion and Flame, 16 (3). pp. 287-294.

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Official URL: http://dx.doi.org/10.1016/S0010-2180(71)80099-8


A knowledge of the concentration distribution around a burning droplet is essential if accurate estimates are to be made of the transport coefficients in that region which influence the burning rate. There are two aspects of this paper; (1) determination of the concentration profiles, using the simple assumption of constant binary diffusion coefficients for all species, and comparison with experiments; and (2) postulation of a new relation for the therinal conductivity, which takes into account the variations of both temperature and concentrations of various species. First, the theoretical concentration profiles are evaluated and compared with experimental results reported elsewhere [5]. It is found that the agreement between the theory and experiment is fairly satisfactory. Then, by the use of these profiles and the relations proposed in the literature for the thermal conductivity of a mixture of nonpolar gases, a new relation for thermal conductivity: K = (A1 + B1 T) + (A2 + B2 T) xr (21). is suggested for analytical solutions of droplet combustion problems. Equations are presented to evaluate A1, A2, B1, and B2, and values of these terms for a few hydrocarbons are tabulated.

Item Type: Journal Article
Publication: Combustion and Flame
Publisher: Elsevier Science
Additional Information: Copyright of this article belongs to Elsevier Science.
Department/Centre: Division of Mechanical Sciences > Mechanical Engineering
Date Deposited: 23 Jun 2010 10:58
Last Modified: 01 Aug 2011 11:52
URI: http://eprints.iisc.ac.in/id/eprint/28439

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