Weak Shock Diffraction and Reflection in Extended Chaplygin Gas

The study has analyzed the diffraction and reflection phenomena of a weak shock interacting with a right‐angled wedge in the context of a more realistic extended Chaplygin gas. Asymptotic solutions to the two‐dimensional Euler system have been derived under appropriate boundary conditions that characterize the diffraction of a weak shock from the wedge. In this study, the effects of the specific gas considered are carefully modeled, and their influence on the overall flow configuration is examined. In particular, a detailed investigation of the local structure near a singular point is conducted, highlighting the significant role of the considered gas behavior in shaping the flow dynamics.