Parallel Performance Investigations of an Unstructured Mesh Navier-Stokes Solver

Abstract

A Reynolds-averaged Navier-Stokes solver based on unstructured mesh techniques for analysis of high-lift configurations is described. The method makes use of an agglomeration multigrid solver for convergence acceleration. Implicit line-smoothing is employed to relieve the stiffness associated with highly stretched meshes. A GMRES technique is also implemented to speed convergence at the expense of additional memory usage. The solver is cache efficient and fully vectorizable, and is parallelized using a two-level hybrid MPI-OpenMP implementation suitable for shared and/or distributed memory architectures, as well as clusters of shared memory machines. Convergence and scalability results are illustrated for various high-lift cases.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 2000
Accession Number
ADA375898

Entities

People

  • Dimitri J. Mavriplis

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Algorithms
  • Boundary Layer
  • Computational Fluid Dynamics
  • Computations
  • Computer Architecture
  • Computer Programming
  • Computers
  • Computing System Architectures
  • Engineering
  • Equations
  • Flow
  • Geometry
  • High Lift
  • High Resolution
  • Inviscid Flow
  • Mach Number
  • Viscous Flow

Readers

  • Computational Fluid Dynamics (CFD)
  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Parallel and Distributed Computing.