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.

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页码：2455 / 2464

页数：10

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