# zbMATH — the first resource for mathematics

DCMG0 1: A multigrid code with defect correction to solve $$\Delta U$$- c(x,y)U$$=f(x,y)$$ (on $$\Omega$$), $$U=g(x,y)$$ (on $$\partial\Omega)$$ on nonrectangular bounded domains $$\Omega$$ with high accuracy. (English) Zbl 0551.65069
Arbeitspapiere der GMD 127. St. Augustin: GMD. 24 p. (1985).
DCMG0 1 is an extension of the multigrid program MG0 1 to solve the Helmholtz equation with Dirichlet boundary conditions by difference methods in general bounded domains $$\Omega \subset R^ 2$$ with high accuracy. The extension is based on a defect correction principle. DCMG01 has been developed and tested in Fortran 77 (single precision) on a CDC CYBER 170 computer (48 bit mantissa).
##### MSC:
 65N22 Numerical solution of discretized equations for boundary value problems involving PDEs 65F10 Iterative numerical methods for linear systems 35-04 Software, source code, etc. for problems pertaining to partial differential equations 35J05 Laplace operator, Helmholtz equation (reduced wave equation), Poisson equation
DCMG0 1