Detonation in supersonic radial outflow

Kasimov, Aslan R.; Korneev, Svyatoslav

Type

Article

Authors

Kasimov, Aslan R.

Korneev, Svyatoslav

KAUST Department

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

Date

2014-11-07

Online Publication Date

2014-11-07

Print Publication Date

2014-12

Permanent link to this record

http://hdl.handle.net/10754/563848

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Abstract

We report on the structure and dynamics of gaseous detonation stabilized in a supersonic flow emanating radially from a central source. The steady-state solutions are computed and their range of existence is investigated. Two-dimensional simulations are carried out in order to explore the stability of the steady-state solutions. It is found that both collapsing and expanding two-dimensional cellular detonations exist. The latter can be stabilized by putting several rigid obstacles in the flow downstream of the steady-state sonic locus. The problem of initiation of standing detonation stabilized in the radial flow is also investigated numerically. © 2014 Cambridge University Press.

Citation

Kasimov, A. R., & Korneev, S. V. (2014). Detonation in supersonic radial outflow. Journal of Fluid Mechanics, 760, 313–341. doi:10.1017/jfm.2014.598

Sponsors

Authors gratefully acknowledge financial support by King Abdullah University of Science and Technology (KAUST). We also thank B Taylor of NRL for his generous permission to use and modify the solver for the reactive Euler equations that he has originally developed as part of Taylor et al. (2009). We also thank the referees for their critical remarks that helped us understand the multitude of issues with a practical realization of the system and we hope helped improve the presentation of our results.