MULTIGRID COMPUTATION FOR TURBULENT RECIRCULATING FLOWS IN COMPLEX GEOMETRIES
作者:
Wei Shyy,
Chia-Sheng Sun,
Ming-Hsiung Chen,
K. C. Chang,
期刊:
Numerical Heat Transfer, Part A: Applications
(Taylor Available online 1993)
卷期:
Volume 23,
issue 1
页码: 79-98
ISSN:1040-7782
年代: 1993
DOI:10.1080/10407789308913663
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Computation of recirculating turbulent flow in complex geometries is important in engineering but fundamentally difficult. A procedure using a full multigrid and full approximation storage is developed in conjunction with a pressure-based algorithm using curvilinear coordinates and the k-e two-equation turbulence model. This method is applied to several flow problems with different geometries, grid sizes, and convection schemes. Although the multigrid procedure does not yield a convergence rate independent of these factors. Us performance is noticeably less affected than that of the single-grid method. Degradation of the boundary representation during grid restriction is one effect on the multigrid performance. Some features regarding the treatment of the turbulence quantities that help the performance of the multigrid method are identified. A special grid restriction procedure is also introduced, which accommodates the velocity characteristics in the wall region and kelps improve the convergence rate.
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