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

Shen, Yang; Shen, Hua; Liu, Kai Xin; Chen, Pu; Zhang, De Liang

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

Files

0d604801d552c22cac4673aca6f824bdb1fc_removed (1).pdf (7.79 MB)

Embargo End Date

2017-11-01

Type

Article

Authors

Shen, Yang

Shen, Hua
Liu, Kai Xin
Chen, Pu
Zhang, De Liang

KAUST Department

Applied Mathematics and Computational Science Program
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

Online Publication Date

2016-11-01

Print Publication Date

2016-11

Date

2016-11-01

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.

Citation

Shen Y, Shen H, Liu K-X, Chen P, Zhang D-L (2016) Three-dimensional detonation cellular structures in rectangular ducts using an improved CESE scheme. Chinese Physics B 25: 114702. Available: http://dx.doi.org/10.1088/1674-1056/25/11/114702.