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Title: The structure and evolution of a two-dimensional H 2/O 2/Ar cellular detonation
Authors: Hu, X.Y.
Zhang, D.L.
Khoo, B.C. 
Jiang, Z.L.
Keywords: Cellular characteristics
Cellular structure
Ignition roles
Issue Date: Jun-2005
Citation: Hu, X.Y., Zhang, D.L., Khoo, B.C., Jiang, Z.L. (2005-06). The structure and evolution of a two-dimensional H 2/O 2/Ar cellular detonation. Shock Waves 14 (1-2) : 37-44. ScholarBank@NUS Repository.
Abstract: This paper reports on two-dimensional numerical simulation of cellular detonation wave in a \rm {H_2} / \rm {O_2} / \rm {Ar} mixture with low initial pressure using a detailed chemical reaction model and high order WENO scheme. Before the final equilibrium structure is produced, a fairly regular but still non-equilibrium mode is observed during the early stage of structure formation process. The numerically tracked detonation cells show that the cell size always adapts to the channel height such that the cell ratio is fairly independent of the grid sizes and initial and boundary conditions. During the structural evolution in a detonation cell, even as the simulated detonation wave characteristics suggest the presence of an ordinary detonation, the evolving instantaneous detonation state indicates a mainly underdriven state. As a considerable region of the gas mixture in a cell is observed to be ignited by the incident wave and transverse wave, it is further suggested that these two said waves play an essential role in the detonation propagation. © Springer-Verlag 2005.
Source Title: Shock Waves
ISSN: 09381287
DOI: 10.1007/s00193-004-0234-5
Appears in Collections:Staff Publications

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