Combination of the immersed boundary method with compact schemes for DNS of flows in complex geometry

被引:0
|
作者
Parnaudeau, Philippe [1 ]
Lamballais, Eric [1 ]
Heitz, Dominique [1 ]
Silvestrini, Jorge H. [1 ]
机构
[1] Univ Poitiers, CNRS, UMR 6609, Lab Etud Aerodynam, F-86862 Futuroscope, France
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中图分类号
O3 [力学];
学科分类号
08 ; 0801 ;
摘要
We present a direct forcing method better suited for the use of compact finite difference schemes in Direct Numerical Simulation. The new forcing creates inside the body an artificial flow preserving the no-slip condition at the surface but reducing the step-like change of the velocity derivatives across the immersed boundary. This modification is shown to improve results both qualitatively and quantitatively for conventional and complex flow geometries.
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页码:581 / 590
页数:10
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