An Application of Draghicescu's Fast Summation Method to Vortex Sheet Motion
An Application of Draghicescu's Fast Summation Method to Vortex Sheet Motion
复制标题
德拉吉塞斯库快速求和法在涡片运动中的应用
DOI：
10.1143/jpsj.67.462
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发表时间：
1998
影响因子：
1.7
通讯作者：
H. Okamoto
中科院分区：
文献类型：
--
作者：
T. Sakajo;H. Okamoto
将Draghicescu快速求和法应用于二维涡片运动的计算。本文报道了我们的数值实验，表明了Draghicescu的快速求和方法在二维涡片计算中的有效性和困难。例如，当我们使用65536=216个涡团时，快速求和法比直接求和法快近30倍。作为一个测试问题，我们在相当长的一段时间内重新研究了Krasny计算涡旋片的问题。
The fast summation method of Draghicescu is applied to computation of 2D vortex sheet motion. This paper reports our numerical experiments which show the effectiveness as well as difficulties of Draghicescu's fast summation method in 2D vortex-sheet computations. For instance, the fast summation method is nearly thirty times faster than the direct summation method when we use 65536 = 2 16 vortex blobs. As a test problem, we re-examine Krasny's problem of computing a vortex sheet for a fairly long time.