Heterogeneous Ignition of a Solid Fuel in a Hot Stagnation-Point Flow
- 1 September 1978
- journal article
- research article
- Published by Taylor & Francis in Combustion Science and Technology
- Vol. 18 (5-6) , 207-215
- https://doi.org/10.1080/00102207808946853
Abstract
A semi-infinite solid fuel is quickly immersed in a hot gas flow and experiences a one-step heterogeneous reaction according to Arrhenius' formula without surface depletion. The mode of ignition was formulated to be applicable with a quasi-steady treatment of the gas-phase. First, the ignition times are computed by numerical method; secondly, they are obtained by asymptotic analysis for the limit of large activation energy. Comparison of the two shows the validity of a parametric ignition time formula obtained analytically. This theoretical formula is readily applicable and can be used for any configuration in which the heat-transfer coefficient is constant.Keywords
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