Analytical study of idealized two-dimensional cellular detonations |
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Authors: | XY Hu DL Zhang ZL Jiang |
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Institution: | (1) Laboratory of High Temperature Gasdynamics, Institute of Mechanics, Chinese Academy of Sciences, 100080 Beijing, P.R. China , CN |
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Abstract: | In this study, the idealized two-dimensional detonation cells were decomposed into the primary units referred to as sub-cells.
Based on the theory of oblique shock waves, an analytical formula was derived to describe the relation between the Mach number
ratio through triple-shock collision and the geometric properties of the cell. By applying a modified blast wave theory, an
analytical model was developed to predict the propagation of detonation waves along the cell. The calculated results show
that detonation wave is, first, strengthened at the beginning of the cell after triple-shock collision, and then decays till
reaching the cell end. The analytical results were compared with experimental data and previous numerical results; the agreement
between them appears to be good, in general.
Received 13 February 2001 / Accepted 2 August 2001 |
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Keywords: | : Gaseous detonation Detonation cell Cellular structure Dynamic mechanism |
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