Implicit overset method for finite-element-method flow solver

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  • 有限要素法流れ解析ソルバーにおける陰的オーバーセット手法
  • ユウゲン ヨウソホウ ナガレ カイセキ ソルバー ニ オケル インテキ オーバーセット シュホウ

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Abstract

<p>Overset method implemented to finite-element-method (FEM） based flow solver for large eddy simulation (LES） was improved for higher rate of convergence and lower numerical errors. In the improved method, pressure is implicitly interpolated in a matrix solver for solving continuity equation with an additional term to guaranty continuity of velocity field at overset boundary. The method was tested in LES of internal flow of a centrifugal pump which composed of 12 impeller blades with a diameter of 318 mm. The accuracy of LES were evaluated by comparing predicted results of pump performance, torque power and discharge flow rate with those measured.</p>

Journal

  • SEISAN KENKYU

    SEISAN KENKYU 72 (1), 87-91, 2020-01-01

    Institute of Industrial Science The University of Tokyo

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