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Simulations of Hydrogen Detonations and DDT

Many numerical works described hydrogen detonations both in 1D and in 2D (Oran et al., 1981, 1998, 1999) (Liang and Bauwens, 2005) (Liang et al., 2007). Due to the exponential growth in computational power, it became also possible to perform simulations of the 3D cellular structure of a H2 detonation wave (Williams et al., 1996, 1997) (Tsuboi et al., 2002) (Eto et al. 2005). Direct detonations is in itself a very challenging phenomenon to be captured numerically but even more difficult is the transition from deflagration to detonations (DDT) because it involves different combustion regimes with different propagation mechanisms and different length scales. Fundamental in numerical hydrogen DDT is the work performed by Oran and coworkers (Gamezo et al., 2007) (Oran and Gamezo, 2007), solving the Navier-Stokes equations with a one-step Arrhenius kinetics as combustion model. Some preliminary results of an interesting and new approach, using LES techniques, can be found in Vaagsaether et al. (2007).

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Page last modified on December 11, 2008, at 09:41 AM