Stabilized lagrange-galerkin schemes of first-and second-order in time for the navier-stokes equations

Hirofumi Notsu*, Masahisa Tabata

*この研究の対応する著者

    研究成果: Article査読

    2 被引用数 (Scopus)

    抄録

    Two stabilized Lagrange-Galerkin schemes for the Navier-Stokes equations are reviewed. The schemes are based on a combination of the Lagrange-Galerkin method and Brezzi-Pitkäranta’s stabilization method. They maintain the advantages of both methods: (i) They are robust for convection-dominated problems and the systems of linear equations to be solved are symmetric; and (ii) Since the P1 finite element is employed for both velocity and pressure,the numbers of degrees of freedom are much smaller than that of other typical elements for the equations,e.g.,P2/P1. Therefore,the schemes are efficient especially for three-dimensional problems. The one of the schemes is of first-order in time by Euler’s method and the other is of second-order by Adams-Bashforth’s method. In the second-order scheme an additional initial velocity is required. A convergence analysis is done for the choice of the velocity obtained by the first-order scheme,whose theoretical result is also recognized numerically.

    本文言語English
    ページ(範囲)331-343
    ページ数13
    ジャーナルModeling and Simulation in Science, Engineering and Technology
    DOI
    出版ステータスPublished - 2016

    ASJC Scopus subject areas

    • 流体および伝熱
    • 工学(全般)
    • 計算数学
    • モデリングとシミュレーション

    フィンガープリント

    「Stabilized lagrange-galerkin schemes of first-and second-order in time for the navier-stokes equations」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

    引用スタイル