Numerical vorticity creation based on impulse conservation.
Numerical vorticity creation based on impulse conservation.
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基于脉冲守恒的数值涡度产生。
DOI：
10.1073/pnas.93.5.1881
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发表时间：
1996
影响因子：
11.1
通讯作者：
A. Chorin
中科院分区：
文献类型：
--
作者：
D. Summers;A. Chorin
在拉格朗日数值涡方法中，通过在壁面上使用脉冲单元并将其转换为涡环，解决了产生螺线管涡单元以满足无滑移边界条件的问题。由于脉冲定义中的规范自由度，该算法并不是唯一定义的;规范的数值最佳选择仍有待确定。两种不同的选择进行了讨论，并概述了一个应用程序流通过一个球体。
The problem of creating solenoidal vortex elements to satisfy no-slip boundary conditions in Lagrangian numerical vortex methods is solved through the use of impulse elements at walls and their subsequent conversion to vortex loops. The algorithm is not uniquely defined, due to the gauge freedom in the definition of impulse; the numerically optimal choice of gauge remains to be determined. Two different choices are discussed, and an application to flow past a sphere is sketched.