A multiblock implementation of a non-orthogonal, collocated finite volume algorithm for complex turbulent flows

F. S. Lien, W. L. Chen, M. A. Leschziner

Research output: Contribution to journalArticle

82 Citations (Scopus)

Abstract

A multiblock algorithm for general 2D and 3D turbulent flows is introduced and applied to three cases: a compressor cascade passage, a two-element high-lift aerofoil and a round-to-square transition duct. The method is a generalization of a single-block scheme which is based on a non-orthogonal, fully collocated finite volume framework, applicable to incompressible and compressible flows and incorporating a range of turbulence transport models, including second-moment closure. The multiblock implementation is essentially block-unstructured, each block having its own local co-ordinate system unrelated to those of its neighbours. Any one block may interface with more than one neighbour along any one block face. Interblock communication is handled by connectivity matrices and effected via a two-cell overlap region along block boundaries in which halo data reside. The algorithm and the associated data communication are explained in detail, and its effectiveness is verified, with particular reference to improved numerical resolution and parallel computing.

Original languageEnglish
Pages (from-to)567-588
Number of pages22
JournalInternational Journal for Numerical Methods in Fluids
Volume23
Issue number6
DOIs
Publication statusPublished - 1996 Sep 30

All Science Journal Classification (ASJC) codes

  • Computational Mechanics
  • Mechanics of Materials
  • Mechanical Engineering
  • Computer Science Applications
  • Applied Mathematics

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