LONG-TIME, LARGE-SCALE PROPERTIES OF A RANDOMLY STIRRED COMPRESSIBLE FLUID

被引：33
|
作者：
STAROSELSKY, I
YAKHOT, V
KIDA, S
ORSZAG, SA
机构：
[1] Applied and Computational Mathematics, Princeton University, Princeton
来源：
PHYSICAL REVIEW LETTERS | 1990年 / 65卷 / 02期
关键词：
D O I：
10.1103/PhysRevLett.65.171
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The large-scale, long-time properties of a compressible fluid stirred by a Gaussian random force with correlation efifjek-y are investigated. It is shown that when =4+y-d>3 (d=space dimension) the effective sound velocity becomes scale dependent in the limit k0 and the fluid obeys a universal equation of state. The effective Mach number is also scale dependent, reaching a fixed-point value Ma(k)<1 when k0. The predictions of the theory are compared with the results of direct numerical simulations. © 1990 The American Physical Society.
引用
收藏
页码：171 / 174
页数：4
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