We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Analysis and modelling of unsteady shock train motions.
- Authors
Bing Xiong; Xiao-qiang Fan; Zhen-guo Wang; Yuan Tao
- Abstract
The characteristics and mechanism for unsteady shock train motions were experimentally studied in a constant-area rectangular duct. High-speed Schlieren techniques and high-frequency pressure measurements were utilized in this research. The results show that the shock train undergoes periodical motions in response to downstream periodical excitations. The mechanism for unsteady shock train motions is that the shock train keeps changing its moving speed to change the relative Mach number ahead of shock train to match the varying back-pressure condition. It can be found that the unsteady shock train motion can be predicted well with a theoretical model, which is based on this mechanism. A correlation between the amplitude of shock train motions and some flow parameters was illustrated using an analytical equation, which was confirmed by the experimental results.
- Subjects
RAILROAD trains; MOTION; MACH number
- Publication
Journal of Fluid Mechanics, 2018, Vol 846, p240
- ISSN
0022-1120
- Publication type
Article
- DOI
10.1017/jfm.2018.209