Numerical observation of secondary Mach stem in weak acoustic shock reflection
Journal of the Acoustical Society of America, ISSN: 0001-4966, Vol: 144, Issue: 2, Page: EL125-EL130
2018
- 2Citations
- 8Captures
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Article Description
Recently Ram, Geva, and Sadot [J. Fluid Mech. 768, 219-235 (2015)] showed, experimentally, the formation of a secondary Mach stem generated from the reflection of the primary Mach stem in the aerodynamic regime. Such a phenomenon has never been observed, either experimentally or numerically, in the framework of weak acoustic shocks. In this work, the formation of a secondary Mach stem is observed from the reflection of acoustic shock waves on a convex-concave boundary giving rise to a complex five-shock pattern. This study is fully numerical and is based on the numerical solution of a nonlinear acoustic system of equations using a recently developed discontinuous Galerkin solver.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85052189824&origin=inward; http://dx.doi.org/10.1121/1.5050667; http://www.ncbi.nlm.nih.gov/pubmed/30180711; https://pubs.aip.org/jasa/article/144/2/EL125/950903/Numerical-observation-of-secondary-Mach-stem-in; http://asa.scitation.org/doi/10.1121/1.5050667; https://asa.scitation.org/action/captchaChallenge?redirectUrl=https%3A%2F%2Fasa.scitation.org%2Fdoi%2F10.1121%2F1.5050667
Acoustical Society of America (ASA)
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