Statistics of dissipation and enstrophy induced by localized vortices


Autoria(s): 何国威; Chen SY; Kraichnan RH; Zhang RY; Zhou Y
Data(s)

1998

Resumo

The ratios of enstrophy and dissipation moments induced by localized vorticity are inferred to be finite. It follows that the scaling exponents for locally averaged dissipation and enstrophy are equal. However, enstrophy and dissipation exponents measured over finite ranges of scales may be different. The cylindrical vortex profile that yields maximal moment ratios is determined. The moment ratios for cylindrical vortices are used to interpret differences in scale dependence of enstrophy and dissipation previously found in numerical simulations.

Identificador

http://dspace.imech.ac.cn/handle/311007/17520

http://www.irgrid.ac.cn/handle/1471x/2140

Idioma(s)

英语

Palavras-Chave #力学
Tipo

期刊论文