An improved CE/SE scheme for numerical simulation of gaseous and two-phase detonations

✍ Scribed by Gang Wang; Deliang Zhang; Kaixin Liu; Jingtao Wang

• Book ID: 104015069
• Publisher: Elsevier Science
• Year: 2010
• Tongue: English
• Weight: 946 KB
• Volume: 39
• Category: Article
• ISSN: 0045-7930
• DOI: 10.1016/j.compfluid.2009.07.010

✦ Synopsis

A new structure of solution elements and conservation elements based on rectangular mesh was proposed and an improved space-time conservation element and solution element (CE/SE) scheme with second-order accuracy was constructed. Furthermore, the application of improved CE/SE scheme was extended to detonation simulation. Three models were used for chemical reaction in gaseous detonation. And a two-fluid model was used for two-phase (gas-droplet) detonation. Shock reflections were simulated by the improved CE/SE scheme and the numerical results were compared with those obtained by other different numerical schemes. Gaseous and gas-droplet planar detonations were simulated and the numerical results were carefully compared with the experimental data and theoretical results based on C-J theory. Mach reflection of a cellular detonation was also simulated, and the numerical cellular patterns were compared with experimental ones. Comparisons show that the improved CE/SE scheme is clear in physical concept, easy to be implemented and high accurate for above-mentioned problems.