OSCILLATING GRIDS AS A SOURCE OF NEARLY ISOTROPIC TURBULENCE

被引：151

作者：

DESILVA, IPD

FERNANDO, HJS

机构：

[1] Department of Mechanical and Aerospace Engineering, Arizona State University, Tempe

来源：

PHYSICS OF FLUIDS | 1994年 / 6卷 / 07期

关键词：

D O I：

10.1063/1.868193

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Turbulence generated by vertical oscillations of a horizontal monoplanar grid in homogeneous water contained in a tank was used to study certain properties of nearly isotropic turbulence. The cases of sustained oscillations and the removal of forcing after a period of oscillations were considered. The former was used to evaluate the Eulerian-frequency spectra of nearly isotropic turbulence, and the velocity-time power law and spectral behavior of decaying turbulence were studied using the latter. The experimental observations are compared with available theoretical formulations as well as previous experimental observations.

引用

页码：2455 / 2464

页数：10

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