Vortex models of isotropic turbulence
Vortex models of isotropic turbulence
复制标题
各向同性湍流的涡模型
DOI：
10.1098/rsta.1997.0097
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发表时间：
1997
期刊：
影响因子：
--
通讯作者：
P. G. Saffman
中科院分区：
文献类型：
--
作者：
P. G. Saffman
展望了各向同性湍流细尺度涡模型的发展前景。这些研究开始于1943年由Synge & Lin用Hill球形涡系综计算纵向速度相关，接着是1951年汤森的工作，用Burgers涡研究耗散范围尺度。作者和D. I. Pullin基于Lundgren 1982年关于Navier-Stokes方程的随机取向拉伸螺旋涡解的工作，将考虑计算一点速度梯度统计和纵向速度相关函数的高阶矩。
The prospects of vortex models of the fine scales of isotropic turbulence are surveyed. These begin with the calculation by Synge & Lin in 1943 of longitudinal velocity correlations, using an ensemble of Hill spherical vortices, and are followed by the work of Townsend in 1951, employing Burgers vortices to study dissipation range scales. Recent developments by the author and Professor D. I. Pullin based on Lundgren's 1982 work on randomly orientated stretched spiral vortex solutions of the Navier—Stokes equations, for the calculation of higher order moments of one–point velocity gradient statistics and longitudinal velocity correlation functions, will be considered.