In Fixed Oblique Detonation Wave Form Analysis And Numerical Simulation

This paper presents theoretical and numerical studies of morphology of standing oblique detonation waves. The stability of ODWs is studied in hypersonic flight conditions. The limits that will cause standing ODWs are discussed. A numerical simulation software is developed that can be used to simulate standing oblique detonation waves in hypervelocity flight conditions. Reasonable parameters and advanced method are provided for the application of standing detonation propulsion technology. The main points are as follows:The mathematical model is developed that can be used to analyze the properties of planar standing oblique detonation waves. Three kinds of chemical reaction model are used to describe the chemical processes of downstream of detonation waves. The conditions that planar standing oblique detonation waves may occur and the factors that may affect them are discussed detailedly. The polar curves of oblique detonation waves and 'Standing Window' are computed under different conditions.The mathematical model is developed for conical detonation waves in supersonic flow. The fundamental equations are given for conical flow. The conditions that standing conical oblique detonation waves may form and the factors that influence them are discussed. Compared conical oblique detonation waves with planar ones, the latter can be applied better in practice.The finite-rate combustion kinetic model for standing oblique detonation waves is established. The TVD finite volume scheme is also presented. The combustion flow fields of standing oblique detonation waves are numerically simulated using 7 species and 8 reaction steps hydrogen combustion model, 10 species and 12 reaction steps methane combustion model respectively. Example has good results.