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Velocity–pressure integrated versus penalty finite element methods for high‐Reynolds‐number flows

 

作者: S.‐W. Kim,   Rand A. Decker,  

 

期刊: International Journal for Numerical Methods in Fluids  (WILEY Available online 1989)
卷期: Volume 9, issue 1  

页码: 43-57

 

ISSN:0271-2091

 

年代: 1989

 

DOI:10.1002/fld.1650090105

 

出版商: John Wiley&Sons, Ltd

 

关键词: Finite element;Penalty method;Consistent penalty

 

数据来源: WILEY

 

摘要:

AbstractVelocity–pressure integrated and consistent penalty finite element computations of high‐Reynolds‐number laminar flows are presented. In both methods the pressure has been interpolated using linear shape functions for a triangular element which is contained inside the biquadratic flow element. It has been shown previously that the pressure interpolation method, when used in conjunction with the velocity‐pressure integrated method, yields accurate computational results for high‐Reynolds‐number flows. It is shown in this paper that use of the same pressure interpolation method in the consistent penalty finite element method yields computational results which are comparable to those of the velocity–pressure integrated method for both the velocity and the pressure fields. Accuracy of the two finite element methods has been demonstrated by comparing the computational results with available experimental data and/or fine grid finite difference computational results. Advantages and disadvantages of the two finite element methods are discussed on the basis of accuracy and convergence nature. Example problems considered include a lid‐driven cavity flow of Reynolds number 10 000, a laminar backward‐facing step flow and a laminar flow through a

 

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