Multiple structure in oxy-hydrogen detonation propagation in rectangular tubes with an improved CE/SE scheme

2nd International Symposium on Application of Materials Science and Energy Materials

材料科学;能源学

Shen, Yang^1 ; Chen, Pu^1 ; Zhang, Deliang^2

LTCS and College of Engineering, Peking University, Beijing, China^1

LHD, Institute of Mechanics, Chinese Academy of Sciences, Beijing, China^2

关键词: Detonation propagation;    Detonation structures;    Elementary cells;    Formation mechanism;    Multiple structures;    Propagation process;    Rectangular tubes;    Space-time conservation element;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/490/6/062069/pdf
DOI  :  10.1088/1757-899X/490/6/062069

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

An improved space-time conservation element and solution element (CE/SE) scheme is used to simulate propagation process of 3-D oxy-hydrogen detonation in rectangular tubes. Multiple detonation structure based on elementary cells of the diagonal, rectangular and spinning mode in square tubes are obtained by numerical cases with different aspect ratios of cross-section. By means of visualizing its detailed structure, the formation mechanism of 3-D multiple cellular patterns is preliminarily discussed. As the cross-sectional aspect ratio increases, new multiple cellular patterns are observed.