Numerical Study of the Propagation of Detonation Waves in Gas Suspensions of Unitary Fuel in Sharply Expanding Rough Tubes

the mechanisms of combustion wave propagation and heterogeneous detonation in sharply expanding pipes were mathematically modeled, taking into account their geometry, roughness, and particle size, within the framework of a model of the two-dimensional axisymmetric unsteady motion of a reacting mixture of gas and unitary fuel particles. The key deciding factors of gas suspensions, the pipeline, and the roughness of the pipe walls were all studied numerically about their effects on stopping the propagation of non-stationary detonation waves. A comparison of the effects of both pipe wall roughness-when present and absent-on detonation wave interruption was done. It is demonstrated that a large portion of the pipeline experiences a quick attenuation of detonation waves due to pipe roughness and that the influence of pipeline roughness on the propagation of detonation waves is lessened when unitary fuel particle size decreases.