MULTIDOMAIN CHEBYSHEV SPECTRAL METHOD FOR 3-D DC RESISTIVITY MODELING

We use the multidomain Chebyshev spectral method to solve the 3-D forw ard direct current (dc) resistivity problem. We divided the whole doma in into a number of subdomains and approximate the potential function by a separate set of Chebyshev polynomials in each subdomain. At an in terface point, we require that both the potential and the flux be cont inuous. Numerical results show that for the same accuracy the multidom ain Chebyshev spectral method is 2 to 260 times faster than the finite -difference method.