On spurious velocities in incompressible flow problems with interfaces

Sashikumaar Ganesan; Gunar Matthies; Lutz Tobiska

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On spurious velocities in incompressible flow problems with interfaces

机译：界面不可压缩流动问题中的伪速度

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摘要

We show that a non-physical velocity may appear in the finite element calculation of incompressible two-phase flows subjected to an external local force. There are different sources responsible for this phenomenon: approximation of the incompressibility constraint, the interface, and the local external force. Furthermore, we demonstrate that this non-physical velocity does not vanish with the expected order of convergence. We evaluate different concepts and give recommendations for a proper handling of this phenomenon.

机译：我们表明，非物理速度可能会出现在受到外部局部力的不可压缩两相流的有限元计算中。造成这种现象的原因有很多：不可压缩性约束，界面和局部外力的近似值。此外，我们证明了这种非物理速度不会以预期的收敛顺序消失。我们评估了不同的概念，并提出了适当处理此现象的建议。

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来源
《Computer Methods in Applied Mechanics and Engineering》 |2007年第7期|p.1193-1202|共10页
作者
Sashikumaar Ganesan; Gunar Matthies; Lutz Tobiska;
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作者单位

Institut fuer Analysis und Numerik, Otto-von-Guericke-Universitaet Magdeburg, Postfach 4120, 39016 Magdeburg, Germany;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类自动化基础理论;工程基础科学;
关键词
incompressible flow; two-phase flow; interface; finite elements;

机译：不可压缩流两相流界面有限元;

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机译：不可压缩流扩散界面模型的无杂散速度的自适应压力校正方法
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3. Spurious velocities in the steady flow of an incompressible fluid subjected to external forces [J] . J.-F. Gerbeau, C. Le Bris, M. Bercovier International Journal for Numerical Methods in Fluids . 1997,第6期

机译：不可压缩流体在外力作用下稳定流动中的杂散速度
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5. Immersed interface methods for incompressible flow with moving interfaces. [D] . Lee, Long. 2002

机译：浸入式接口方法用于带有移动接口的不可压缩流。
6. New Finite Difference Methods Based on IIM for Inextensible Interfaces in Incompressible Flows [O] . Zhilin Li, Ming-Chih Lai -1

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7. An adaptive pressure correction method without spurious velocities for diffuse-interface models of incompressible flows [O] . Minjeaud Sebastian 2013

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8. The Two-dimensional Subsonic Flow of an Inviscid Fluid about an Aerofoil of Arbitrary Shape Part I. Incompressible Flow about a Symmetrical Aerofoil in a Channel or Free Stream. Part II. Incompressible Flow about an Asymmetric Aerofoil in a Free Stream. Part III. The Influence Factor Method of Calculating Incompressible Flow. Part IV. Compressible Flow. [R] . L. C. WOODS 1953

机译：关于任意形状翼型的Inviscid流体的二维亚音速流动。关于通道或自由流中对称翼型的不可压缩流动。第二部分。关于自由流中不对称翼型的不可压缩流动。第三部分。计算不可压缩流动的影响因素法。第四部分。可压缩流动。

On spurious velocities in incompressible flow problems with interfaces

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