Unstructured Grid-based Numerical Simulation Of The Oblique Detonation Wave And Current Field

Unstructured meshes and elementary reaction model are applied to the study of numerical simulation for two-dimensional (2D) oblique detonation wave flow field. A numerical method to simulate the hypersonic flow of chemical non-equiMbrium is presented. And a parallel algorithm is studied in the simulation for 2D oblique detonation wave flow field. The following results are obtained:(1) Detailed chemical reaction scheme is used to establish the mathematical model which describes the finite velocity chemical flow of multi-components. Based on the unstructured meshes, a finite volume TVD scheme with high precision is developed to simulate the chemical non-equilibrium flow of multi-components. In the numerical simulation for oblique detonation wave flow field, the obtained results are well accord with the experimental photos.(2) The computational CPU time of numerical simulation for detonation wave flow field is huge, while stockpile is lack on a single machine. In this case, a parallel arithmetic based on MPI parallel environment on PC-Cluster system for the 2D oblique detonation wave flow field is discussed. In the parallel simulation for the field, the calculating speed is efficiently accelerated and the simulative scale is extended. The results obtained proves the rationality of the parallel arithmetic, which provides a new method to simulate the oblique detonation wave flow field.