Three-dimensional detonation cellular structures in rectangular ducts using an improved CESE scheme |
| |
| Affiliation: | 1.State Key Laboratory for Turbulence and Complex System, College of Engineering, Peking University, Beijing 100871, China;2.Department of Applied Mathematics and Computational Science, King Abdullah University of Science and Technology, Thuwal, Kingdom of Saudi Arabia;3.State Key Laboratory of High Temperature Gas Dynamics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China |
| |
| Abstract: | The three-dimensional premixed H_2-O_2 detonation propagation in rectangular ducts is simulated using an in-house parallel detonation code based on the second-order space-time conservation element and solution element(CE/SE) scheme.The simulation reproduces three typical cellular structures by setting appropriate cross-sectional size and initial perturbation in square tubes.As the cross-sectional size decreases,critical cellular structures transforming the rectangular or diagonal mode into the spinning mode are obtained and discussed in the perspective of phase variation as well as decreasing of triple point lines.Furthermore,multiple cellular structures are observed through examples with typical aspect ratios.Utilizing the visualization of detailed three-dimensional structures,their formation mechanism is further analyzed. |
| |
| Keywords: | CE/SE scheme three-dimensional gaseous detonation cellular pattern |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《中国物理 B》浏览原始摘要信息 |
|
点击此处可从《中国物理 B》下载免费的PDF全文 |
|
