Solution of Mixed Half-Plane Diffraction Problems of Non-Stationary Plane and Cylindrical Waves and Blast Wave Protection by Barriers

摘要

Exact analytical solutions of diffraction problems are obtained for nonstationary plane and cylindrical waves on a half-plane at following mixed boundary conditions: the Neumann condition on one side of the half-plane and the Dirichlet condition on the other one. The numerical analysis of near-front asymptotic solutions shows that there is a considerably greater attenuation of blast waves behind the half-plane (barrier) with sides of different noise absorption properties, than in the case of complete reflection from both sides of the half-plane.