TY - JOUR
T1 - Numerical observation of secondary Mach stem in weak acoustic shock reflection
AU - Tripathi, Bharat B.
AU - Baskar, Sambandam
AU - Coulouvrat, François
AU - Marchiano, Régis
N1 - Publisher Copyright:
© 2018 Acoustical Society of America.
PY - 2018/8/1
Y1 - 2018/8/1
N2 - 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.
AB - 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.
UR - https://www.scopus.com/pages/publications/85052189824
U2 - 10.1121/1.5050667
DO - 10.1121/1.5050667
M3 - Article
SN - 0001-4966
VL - 144
SP - EL125-EL130
JO - Journal of the Acoustical Society of America
JF - Journal of the Acoustical Society of America
IS - 2
ER -