Interaction between a sonic boom N-wave and an obstacle near corner points

A conical shock tube is used to study the impact of a sonic-boom wave on the upper portion of a model structure (parallelepiped) to determine the time-behavior of the pressure acting on a building. The effects of diffraction and reflection of the N-wave at the corners and roof of the model are taken into consideration. The effect of the low-pressure wave arising at an upper corner of the building on the pressure distribution over the wall exposed to the shock wave is evaluated. The pressure on the building near the apex of a triangular corner is plotted against time.