SUPG stabilization parameters calculated from the quadrature-point components of the element-level matrices

J. Ed Akin, Tayfun E. Tezduyar

研究成果: Paper査読

抄録

We investigate, for linear and higher-order elements, various ways of calculating the advective limit of the stabilization parameter ("τ") used in the streamline-upwind/Petrov-Galerkin (SUPG) formulation of flow problems. In the context of a pure advection test problem, we compare the "UGN-based" and element-matrix-based calculations and the calculations from the quadrature-point components of the element-level matrices. Our investigation shows that the performances of all three definitions are comparable, with the element-based definitions yielding somewhat lower τ values and the quadrature-point-based definitions somewhat higher. We also show that for both the element-based and quadrature-point-based definitions, as the polynomial orders increase, the τ values decrease, as they should.

本文言語English
出版ステータスPublished - 2004 12 1
外部発表はい
イベントEuropean Congress on Computational Methods in Applied Sciences and Engineering, ECCOMAS 2004 - Jyvaskyla, Finland
継続期間: 2004 7 242004 7 28

Conference

ConferenceEuropean Congress on Computational Methods in Applied Sciences and Engineering, ECCOMAS 2004
国/地域Finland
CityJyvaskyla
Period04/7/2404/7/28

ASJC Scopus subject areas

  • 人工知能
  • 応用数学

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