Stoichiometric acetylene-oxygen mixtures diluted by argon are widely used in normal
detonation waves but have not yet been used in oblique detonation waves (ODWs). The
present study simulates ODWs in acetylene-oxygen-argon mixtures, with a dilution ratio Φ=
50%-90%, using the reactive Euler equations with a detailed chemistry model, and
describes the characteristics of acetylene ODWs. Similar to ODWs in hydrogen-air mixtures,
the transition from the oblique shock wave to ODW may be either abrupt or smooth and the …