A Numerical Study on Detonation Wave Propagation Using High-Precision and High-Resolution Schemes

摘要

The formation and propagation processes of gaseous detonation wave are reseached in the pipe.Methane-oxygen premixed gas detonation is conducted by multi-component two-dimensional Euler equations and finite-rate reaction model.For better accuracy,the fifth-order WENO scheme is adopted to interpolate left and right states across a cell interface based on the Roe Riemann solver.The computed results based on the finite volume method suggest above numerical method proves to have great capabilities to capture shock and contact discontinuities with high resolution and be more efficient.Furthermore,the gas detonation physical mechanism induced by the detonation wave in the field of multi-obstacles is discussed.The roles of detonation wave interaction with obstructions and pipe wall are analyzed.Study results well describe the details of the gaseous detonation,which accord with the actual laws of physics,and provide an important basis for research of explosion damage effects and explosion hazard prevention.