Title :
PML-FDTD method for elastic waves in cylindrical and spherical coordinates
Author_Institution :
Klipsch Sch. of Electr. & Comput. Eng., New Mexico State Univ., Las Cruces, NM, USA
Abstract :
A perfectly matched layer (PML) is developed for elastic waves in cylindrical and spherical coordinates using the improved scheme of complex coordinates. With the introduction of the integrated complex stretching variables, the cylindrical and spherical PML schemes require no more unknown split field components than in Cartesian coordinates. The FDTD results confirm the efficacy of the PML absorbing boundary condition.
Keywords :
absorbing media; acoustic wave absorption; elastic waves; finite difference time-domain analysis; FDTD results; PML; PML-FDTD method; absorbing boundary condition; acoustic waves; borehole acoustic measurements; complex coordinates; cylindrical coordinates; elastic waves; integrated complex stretching variables; perfectly matched layer; spherical coordinates; Application software; Boundary conditions; Electromagnetic scattering; Engineering profession; Equations; Finite difference methods; Nonhomogeneous media; Perfectly matched layers; Stress; Time domain analysis;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1999. IEEE
Conference_Location :
Orlando, FL, USA
Print_ISBN :
0-7803-5639-x
DOI :
10.1109/APS.1999.789574
