Simulations of Cavity-stabilized Flames in Supersonic Flows Using Reduced Chemical Kinetic Mechanisms

Abstract

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Cavity ignition in supersonic flow by spark discharge and pulse detonation

“…In order to replicate the products of the detonation from the experiments, the gas composition was derived from the Chapman-Jouguet calculations with the species N 2 , H 2 O, CO, CO 2 , O 2 , H 2 , O, H, and OH. For the chemical reactions inside the cavity with C 2 H 4 , the TP2 reduced kinetic model was used and no turbulence-chemistry interaction was taken into account [12]. The computational domain consisted of the full width and height of the test section with a total of 12.4 million cells.…”

Numerical investigation on shock train control and applications in a scramjet engine

“…1(a), it has been designed for the conditions of incoming Mach number M∞ = 6 at the entrance and the truncation wedge angle of the leading-edge is 3°. The Busemann inlet design will result in smaller wetted areas, compared to that of normal inlet design, to reduce internal drag, and lower heating load to the structure [6], [7], [8] and [9], which would yield a further reduction in the amount of active cooling airflow required by a similar twodimensional geometry. However, the full-scale streamline-traced Busemann inlet would be too long to achieve the lower total pressure loss under the assumption of inviscid flow.…”

“…Most studies of cavity-based flame-holder have been done numerically without considering the chemical reaction and the experimental tests [4], [5], [6] and [7]. However, for a practical application to a supersonic combustion, it is crucial and highly demanding to carry out a numerical analysis on a cavity flow for flame holding in chemical reactions, prior to expensive experiments.…”

Combustor Operability and Performance Verification for HIFiRE Flight 2

“…The value for Pr t was selected to be 0.9. Chemical reactions were modeled using the reduced kinetic mechanism generated by the Princeton University 15 . This mechanism consists of 22 species and it was developed based on the detailed mechanism of Wang and Laskin.…”