“…We have used the PEGSUS codes (Benek et al, 1986;Suhs et al, 1991) to make interconnections of subdomains, define the hole regions, and supply points to facilitate communication among grids during the solution process. At present, the Chimera scheme employs bilinear interpolation that, as some simple experiments have shown (Mastin et al, 1984;Parthasarathy, 1984), is superior to Taylor series expansion.…”