HALF-SPACE GREENS'S FUNCTION DUE TO A SPATIALLY HARMONIC LINE LOAD AND SCATTERED FIELDS IN THE FAR FIELD REGION

摘要

Half-space Green’s function due to a spatially harmonic line load has been expressed asa sum of the full-space Green’s functions and a 2-D integral representation of the reflected waves bythe free surface of the half-space.By using the obtained half-space Green’s function,an integral rep-resentation of the scattered waves by a cylindrical obstacle is then derived.Finally,by analyzing thefar-zone behavior of the integrands of the integral representation.the far-field pattern of the scatteredwaves in a half-space obtained.