Publication Date:
2003-05-10
Description:
The spectrum of linear modes governing the multidimensional instabilities of gaseous detonations is revisited by combining a numerical analysis with new analytical results. In view of recent developments in nonlinear analyses for describing the cellular structure of weakly unstable detonation fronts, particular attention is paid to the neighbourhood of the instability threshold. A first objective is to check the validity domain of the analytical results and to investigate to what extent they are useful when approaching the self-sustained regime (Chapman-Jouguet conditions). A second objective is to study how the multidimensional instabilities are influenced by multiple-step chemistry. The roles of the induction period and of the stiffness of the exothermic runaway will be investigated separately.
Print ISSN:
0022-1120
Electronic ISSN:
1469-7645
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
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