Numerical Simulations on Failure Processes of Detonation Waves Propagating in an Expanding Channel

抄録

The present paper studies failure processes of detonation waves propagating in an expanding channel by conducting numerical simulations. A computational procedure, which combines the random choice method with a chemical kinetics simulation code and a step for the effects of the cross-sectional area of the channel, is applied to simulate gasdynamic and chemical phenomena of one-dimensional detonation waves moving through an expanding channel filled with hydrogen and oxygen diluted in an argon mixture. Also, two-dimensional simulations are carried out and compared with the one-dimensional results. It is shown that the present one-dimensional simulations calculate averaged flowfields of the two-dimensional results over the cross section of the channel.