Numerical Simulation of Three-dimensional Flow Field of Continuous Rotating Detonation

doi:10.3969/j.issn.1000-1093.2012.05.015

Abstract

Abstract: The rotating detonation in a circular combustion chamber was numerically simulated by using a simplified 9-species, 19-step reaction model based on the three-dimensional Euler equations with chemical reaction. The numerical calculation method used is based on a second-order spatially wave propagation algorithm and a two-step Runge-Kutta time marching algorithm. The calculated streak picture is in qualitative agreement with the picture recorded by a high speed streak camera. The three dimensional flowfields induced by a continuous rotating detonation and the distinctive features of the rotating detonations were described in detail. The calculated result shows that the detonation wave can rotationally propagate along the combustible mixture layer, and the lateral rarefaction waves from the air and the previous detonation product lead to the detonation deficit.

Key words: mechanics of explosion, continuous rotating detonation, detonation-shock composite wave, detonation deficit

CLC Number:

O381

PAN Zhen-hua, FAN Bao-chun, ZHANG Xu-dong, GUI Ming-yue. Numerical Simulation of Three-dimensional Flow Field of Continuous Rotating Detonation[J]. Acta Armamentarii, 2012, 33(5): 594-599.

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