A One-Dimensional Discrete Boltzmann Model for Detonation and an Abnormal Detonation Phenomenon |
| |
| Authors: | Yu-Dong Zhang Ai-Guo Xu Guang-Cai Zhang Zhi-Hua Chen |
| |
| Institution: | 1. Key Laboratory of Transient Physics, Nanjing University of Science and Technology, Nanjing 210094, China;
2. Laboratory of Computational Physics, Institute of Applied Physics and Computational Mathematics, Beijing 100088, China;
3. Center for Applied Physics and Technology, MOE Key Center for High Energy Density Physics Simulations, College of Engineering, Peking University, Beijing 100871, China |
| |
| Abstract: | A one-dimensional discrete Boltzmann model for detonation simulation is presented. Instead of numerical solving Navier-Stokes equations, this model obtains the information of flow field through numerical solving specially discretized Boltzmann equation. Several classical benchmarks including Sod shock wave tube, Colella explosion problem,and one-dimensional self-sustainable stable detonation are simulated to validate the new model. Based on the new model,the influence of negative temperature coefficient of reaction rate on detonation is further investigated. It is found that an abnormal detonation with two wave heads periodically appears under negative temperature coefficient condition.The causes of the abnormal detonation are analyzed. One typical cycle of the periodic abnormal detonation and its development process are discussed. |
| |
| Keywords: | detonation discrete Boltzmann model negative temperature coefficient abnormal detonation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《理论物理通讯》浏览原始摘要信息 |
| 点击此处可从《理论物理通讯》下载免费的PDF全文 |
|
