Related Experiment Video
Updated: Feb 5, 2026

Fabrication, Operation and Flow Visualization in Surface-acoustic-wave-driven Acoustic-counterflow Microfluidics
Published on: August 27, 2013
Numerical observation of secondary Mach stem in weak acoustic shock reflection
Bharat B Tripathi1, Sambandam Baskar2, François Coulouvrat1
1Sorbonne Université, CNRS, Institut Jean Le Rond d'Alembert, 4 place Jussieu, 75252 Paris, France.
Abstract:
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.
More Related Videos
Related Concept Videos
Weak Base Solutions
Weak Acid Solutions
Titration of a Weak Acid with a Weak Base
As a result, there is no simple...
Numerical Calculations
The solution to a problem is obtained using different methods. While manually solving algebraic symbols is one of the most common methods, the graphical method is often preferred. Computers...
Titration Calculations: Weak Acid - Strong Base
For the titration of 25.00 mL of 0.100 M CH3CO2H with 0.100 M NaOH, the reaction can be represented as:
Primary and Secondary Growth in Roots and Shoots

