中国物理B ›› 2016, Vol. 25 ›› Issue (11): 114702-114702.doi: 10.1088/1674-1056/25/11/114702

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Three-dimensional detonation cellular structures in rectangular ducts using an improved CESE scheme

Yang Shen(沈洋), Hua Shen(申华), Kai-Xin Liu(刘凯欣), Pu Chen(陈璞), De-Liang Zhang(张德良)   

  1. 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
  • 收稿日期:2016-03-30 修回日期:2016-05-31 出版日期:2016-11-05 发布日期:2016-11-05
  • 通讯作者: De-Liang Zhang E-mail:dlzhang@imech.ac.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 10732010 and 10972010).

Three-dimensional detonation cellular structures in rectangular ducts using an improved CESE scheme

Yang Shen(沈洋)1, Hua Shen(申华)2, Kai-Xin Liu(刘凯欣)1, Pu Chen(陈 璞)1, De-Liang Zhang(张德良)3   

  1. 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
  • Received:2016-03-30 Revised:2016-05-31 Online:2016-11-05 Published:2016-11-05
  • Contact: De-Liang Zhang E-mail:dlzhang@imech.ac.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 10732010 and 10972010).

摘要: The three-dimensional premixed H2-O2 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.

关键词: CE/SE scheme, three-dimensional gaseous detonation, cellular pattern

Abstract: The three-dimensional premixed H2-O2 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.

Key words: CE/SE scheme, three-dimensional gaseous detonation, cellular pattern

中图分类号:  (Detonation waves)

  • 47.40.Rs
82.33.Vx (Reactions in flames, combustion, and explosions) 02.60.Cb (Numerical simulation; solution of equations)