| Citation: | YANG Li, YUE Lianjie. Numerical study on viscous flow field and initiation evolution of oblique detonation waves[J]. Journal of Aerospace Power, 2025, 40（2）：20220535 doi: 10.13224/j.cnki.jasp.20220535
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To investigate the influences of viscous effects on the oblique detonation wave (ODW) front, and discern the essential characteristic for the evolution of ODW initiation, an inviscid/viscous simulation was conducted with a high-resolution numerical solver to study the wedge-induced ODW. It was manifested that the wave angle of inert oblique shock wave (OSW) for viscous computation was larger than that for inviscid computation, which contributed to a short induction ignition length behind OSW with consideration of the influence of separation bubble downstream. For viscous simulation, owing to the unsteady characteristics of the separation/attachment shock wave aligned to the separation bubble on the wall, the cellular-like structures of ODW front appeared more quickly. The initiation of ODW was triggered by the collision between shock-induced combustion and OSW, and ODW expanded outward subjecting to the triple-point; especially, the strength of the combustion wave had a significant influence on the scale of strong overdriven ODW region in quasi-steady flow field.
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