Combination of the Immersed Boundary Method with Compact Schemes for DNS of Flows in Complex Geometry
Combination of the Immersed Boundary Method with Compact Schemes for DNS of Flows in Complex Geometry
复制标题
浸入边界法与复杂几何流动 DNS 紧凑方案的结合
DOI：
10.1007/978-1-4020-2313-2_61
复制
发表时间：
2004
影响因子：
1.5
通讯作者：
J. Silvestrini
中科院分区：
文献类型：
--
作者：
P. Parnaudeau;E. Lamballais;D. Heitz;J. Silvestrini
本文提出了一种更适合于紧致差分格式在直接数值模拟中应用的直接强迫方法。新的强迫在体内创建一个人工流，保持表面的无滑移条件，但减少了浸没边界上速度导数的阶跃变化。这种修改被证明是提高结果的定性和定量的常规和复杂的流动几何形状。
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.