Applied Mathematics and Mechanics (English Edition) ›› 1990, Vol. 11 ›› Issue (6): 501-511.

• 论文 •    下一篇

A PENALTY-HYBRID FINITE ELEMENT ANALYSIS OF STOKES FLOW

陈大鹏, 赵忠   

  1. Southwest Jiaotong University, Chengdu
  • 收稿日期:1989-06-19 出版日期:1990-06-18 发布日期:1990-06-18
  • 基金资助:
    The project Supported by National Natural Science Foundation of China

A PENALTY-HYBRID FINITE ELEMENT ANALYSIS OF STOKES FLOW

Chen Da-peng, Zhao Zhong   

  1. Southwest Jiaotong University, Chengdu
  • Received:1989-06-19 Online:1990-06-18 Published:1990-06-18
  • Supported by:
    The project Supported by National Natural Science Foundation of China

摘要: A type of penalty-hybrid variational principle is suggested for the analysis of Stokesian flow. On such a basis, a finite element model is formulated featuring, among others, a priori satisfaction of the deviatoric stress and hydrostatic pressure on linear momentum balance equations. Also in the present scheme the hydrostatic pressure is successfully eliminated at the element level, leaving only nodal velocities as solution unknowns. A series of 4-node and 8-node quadrilateral elements are derived and examined. Numerical examples demonstrating their characteristic behaviors are also included.

Abstract: A type of penalty-hybrid variational principle is suggested for the analysis of Stokesian flow. On such a basis, a finite element model is formulated featuring, among others, a priori satisfaction of the deviatoric stress and hydrostatic pressure on linear momentum balance equations. Also in the present scheme the hydrostatic pressure is successfully eliminated at the element level, leaving only nodal velocities as solution unknowns. A series of 4-node and 8-node quadrilateral elements are derived and examined. Numerical examples demonstrating their characteristic behaviors are also included.

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