Science and Technology of Energetic Materials

Vol.73, No.6 (2012)

Research paper

Numerical approach to one-dimensional CH4/O2 detonation with the reduced chemical kinetic model DRG30
Youhi Morii, Nobuyuki Tsuboi, Hiroyuki Ogawa, Shinichiro Tokudome and A. Koichi Hayashi


In order to understand the effect of the CH4/O2 chemical kinetic models for detonation phenomena, the numerical calculations use one detailed chemical kinetic model k3l1 and four reduced chemical kinetic models such as DRG30 model, DRG23 model, Petersen & Hanson model, and Soetrisno model. At first, the calculations of laminar flame velocity and onedimensional ZND model are performed to compare with k3l1 model. Then, it is shown that DRG30 model is the most reliable reduced chemical kinetic model in four reduced kinetic models in these conditions. Next, the one-dimensional Euler simulations are performed with k3l1 model, DRG30 model, Petersen & Hanson model, and Soetrisno model. The results are discussed about detonation velocity history, and instantaneous pressure and temperature profiles. The detonations using k3l1, DRG30, and Petersen & Hanson models can propagate unstably, but Soetrisno model cannot reproduce a detonation. As a result, the similar features appear between the results with k3l1 model and DRG30 model.

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methane, detonation, CFD, chemical kinetic model

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