AN ANALYSIS OF THE EFFECT OF HETEROGENEOUS REACTION KINETICS ON THE COMBUSTION OF GRAPHITE AT THE STAGNATION REGION OF A BLUNT BODY IN HYPERSONIC FLOW
- 28 February 1963
- report
- Published by Defense Technical Information Center (DTIC)
Abstract
An approximate analysis is performed for the combustion rate of carbon in air at the stagnation region of a blunt body in hypersonic flow for the intermediate regime of conditions between the reaction-kinetic-limited and the diffusion-limited extremes. The effect of mass addition to the boundary layer caused by the combustion is considered. Combustion rates in the intermediate regime are derived using closed-form approximations for available boundary layer analyses. The results, shown in a generalized form, are valid for arbitrary reaction kinetics and combustion products. The limitations of the series-resistance approach are demonstrated. A numerical comparison of the closed-form results for the mass loss rates in the diffusion-limited regime and the recent results of Scala indicate that the present simplifications are satisfactory for engineering purposes.Keywords
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