Conservative Velocity Interpolation for PDF Methods
Conservative Velocity Interpolation for PDF Methods
复制标题
PDF 方法的保守速度插值
DOI：
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发表时间：
2004
期刊：
影响因子：
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通讯作者：
P. Jenny
中科院分区：
文献类型：
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作者：
D. Meyer;P. Jenny
在许多粒子方法中，将计算网格上表示的速度场精确插值到任意位置是至关重要的[2，5]。分析了质量守恒的重要性和插值格式的阶数。最初均匀分布的粒子跟踪在一个固定的，不可压缩的二维流场使用不同的插值方案。可以证明，特别是在复杂的流动模式的情况下，质量守恒是非常重要的。本文提出的方法更具有一般性，可推广到非定常、可压缩三维流动问题。（© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA，魏因海姆）
In many particle methods the accurate interpolation of a velocity field represented on a computational grid to arbitrary positions is crucial [2, 5]. Here, the importance of mass conservation and order of the interpolation scheme were analyzed. Initially equally distributed particles were tracked in a stationary, incompressible 2d flow field using different interpolation schemes. It could be demonstrated that especially mass conservation is of great importance, in particular in the case of complex flow patterns. The ideas presented in this paper are more general and the methods can be extended for unsteady, compressible 3d flow problems. (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)