Subroutines for Direct Solution of Two-Dimensional Elliptic Equations.

Abstract

The report contains the documentation of four subroutines for the direct numerical solution of separable elliptic partial differential equations. The routines use the block-cyclic reduction and factoralization algorithm described by Buzbee, Golub, and Nielson (1970), Sweet (1973), and Rosmond and Faulkner (1975). The subroutines are modifications of programs developed by Dr. Roland Sweet of NCAR. The four subroutines are called POISDT, POISPT, POISNT, and POITRG. They solve two-dimensional Poisson's or Helmholtz's equations with, in the y-coordinate direction, Dirichlet B.C., periodic B.C., Neumann B.C. on an unstaggered grid, or Neumann B.C. on a staggered grid, respectively.

Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1975
Accession Number
ADA013190

Entities

People

  • Thomas E. Rosmond

Tags

DTIC Thesaurus Topics

  • Algorithms
  • Differential Equations
  • Equations
  • Grids
  • Mathematical Analysis
  • Mathematics
  • Partial Differential Equations
  • Procedures (Computers)
  • Two Dimensional

Readers

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