3:00 PM - 3:15 PM
[STT55-06] An accurate and efficient finite-difference operator for the frequency-domain wave propagation
Keywords:finite-difference method, frequency-domain
In the present study, we use a stretched stencil of FD operator not to increase the bandwidth in the impedance matrix. Coefficients of the stencil are determined by a minimization process. We investigate the accuracy of our scheme using dispersion analysis and numerical experiment. They show that the proposed scheme can improve not only accuracy but also efficiency compared to the conventional 9-point scheme proposed by Jo et al. (1996).