Oscillating grids turbulence generator for turbulent transport studies

被引：8

作者：

Eidelman, A ^{[1
]}

Elperin, T ^{[1
]}

Kapusta, A ^{[1
]}

Kleeorin, N ^{[1
]}

Krein, A ^{[1
]}

Rogachevskii, I ^{[1
]}

机构：

[1] Ben Gurion Univ Negev, Dept Mech Engn, Pearslstone Ctr Aeronaut Engn Studies, IL-84105 Beer Sheva, Israel

来源：

NONLINEAR PROCESSES IN GEOPHYSICS | 2002年 / 9卷 / 3-4期

关键词：

D O I：

10.5194/npg-9-201-2002

中图分类号：

P [天文学、地球科学];

学科分类号：

07 [理学];

摘要：

An oscillating grids turbulence generator was constructed for studies of two new effects associated with turbulent transport of particles, turbulent thermal diffusion and clustering instability. These effects result in formation of large-scale and small-scale inhomogeneities in the spatial distribution of particles. The advantage of this experimental set-up is the feasibility to study turbulent transport in mixtures with controllable composition and unlimited observation time. For flow measurements we used Particle Image Velocimetry with the adaptive multi-pass algorithm to determine a turbulent velocity field and its statistical characteristics. Instantaneous velocity vector maps, flow streamlines and probability density function of velocity field demonstrate properties of turbulence generated in the device.

引用

页码：201 / 205

页数：5

共 20 条

[1]

Baker B, 1998, CONFERENCE ON CLOUD PHYSICS, P148

[2]

OSCILLATING GRIDS AS A SOURCE OF NEARLY ISOTROPIC TURBULENCE [J].