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A MULTIBLOCK IMPLEMENTATION OF A NON‐ORTHOGONAL, COLLOCATED FINITE VOLUME ALGORITHM FOR COMPLEX TURBULENT FLOWS
Author(s) -
LIEN F. S.,
CHEN W. L.,
LESCHZINER M. A.
Publication year - 1996
Publication title -
international journal for numerical methods in fluids
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 112
eISSN - 1097-0363
pISSN - 0271-2091
DOI - 10.1002/(sici)1097-0363(19960930)23:6<567::aid-fld443>3.0.co;2-a
Subject(s) - finite volume method , algorithm , turbulence , block (permutation group theory) , polygon mesh , lift (data mining) , computer science , computational fluid dynamics , generalization , mesh generation , airfoil , mathematics , finite element method , geometry , aerospace engineering , mathematical analysis , physics , mechanics , engineering , data mining , thermodynamics
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.