The blast waves generated by the explosion of a bomb or the violent thrust of a missile launch would damage the personnel and facilities. Understanding the blast effects and behaviors is very important in minimizing or even avoiding their damages. Due to the lack of experimental facility, the numerical simulation method, CFD, was used to study the behaviors of blast waves. Validations of the numerical model developed in this study against test data obtained from a symmetric shock tube and a two-dimensional wedge were done first. Subsequently, fundamental studies in interaction, propagation,...