A shock-pinned random projection method( SRPM) is proposed. To overcome difficulty of multidirectional propagation,local random projection is applied by introducing a shock indicator along with proper rules for choosing local projection zones around shocks in each reaction step. Numerical experiments are presented. It shows that SRPM is appropriate for detonation waves with multi-directional propagation,which is high-efficient in solving stiff reactive equations and extensible to 3D situations.

Massively parallel numerical simulation of a kerosene-fueled scramjet on national MPP computer with 1024 CPUs is presented.A self-developed software AHL3D is employed.Reynolds averaged N-S equations are adopted in governing equations.Inviscid flux is computed with Steger-Warming flux-splitting scheme.Turbulent effects are studied in a k-ω two-equation turbulence model.Kerosene is replaced by a simple surrogated fuel of n-decane.Computed wall pressure along combustor exhibits good agreement with measured data.Computation shows that cavity provides main ignition zone and flame holder,and recirculation zone resulting from fuel injection contributes to flame stability.It indicates that the AHL3D code and methodologies can be used to simulate complicated flow patterns in kerosene-fueled scramjets.