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http://dx.doi.org/10.5139/JKSAS.2005.33.8.075

A Study of Transonic Premixed Combustion in a Diverging Channel Using Asymptotic Analysis  

Lee, Jang-Chang (안동대학교 기계공학부)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.33, no.8, 2005 , pp. 75-83 More about this Journal
Abstract
A steady transonic dilute premixed combustion in a diverging channel is investigated by using asymptotic analysis. This model explores the nonlinear interactions between the near-sonic speed of the flow, the small changes in geometry from a straight channel, and the small heat release due to the one-step first-order Arrhenius chemical reaction. The reactive flow is described by a nonhomogeneous transonic small-disturbance (TSD) equation coupled with an ordinary differential equation for the calculation of the reactant mass fraction in the combustible gas. Also the asymptotic analysis reveals the similarity parameters that govern the reacting flow problem. The results show the complicated nonlinear interaction between the convection, reaction, and geometry effects and its effect on the flow behavior.
Keywords
Transonic; Dilute; Premixed Combustion; Reactive Fluid; Asymptotic Analysis;
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