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首页> 外文期刊>Experimental Thermal and Fluid Science: International Journal of Experimental Heat Transfer, Thermodynamics, and Fluid Mechanics >Constant Reynolds number turbulence downstream of an orificed perforated plate
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Constant Reynolds number turbulence downstream of an orificed perforated plate

机译：多孔板下游的恒定雷诺数湍流

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摘要

Quasi-isotropic turbulence was experimentally produced in a wind tunnel via an orificed, perforated plate (OPP) at 10.5 m/s. The OPP consists of a lattice arrangement of 38.1 min holes occupying 57% of the plate area. The OPP turbulence was found to be homogeneous over the cross section normal to the mean flow with Gaussian-like turbulence fluctuation. The isotropy of the turbulence field as portrayed by the streamwise/lateral turbulence intensity ratio was found to be approximately 1.1. The OPP turbulence is essentially self-preserving wherein the Taylor microscale Reynolds number remains nearly constant and the lateral velocity correlations collapse into a single curve. (c) 2006 Elsevier Inc. All rights reserved.
机译：在风洞中，通过孔板，多孔板（OPP）以10.5 m / s的速度产生了准各向同性湍流。 OPP由38.1个最小的孔的晶格排列组成，占据了板面积的57％。发现在垂直于平均流量的横截面上，OPP湍流是均匀的，且具有高斯型湍流波动。由流向/侧向湍流强度比所描绘的湍流场的各向同性被发现约为1.1。 OPP湍流本质上是自保持的，其中泰勒微尺度雷诺数保持几乎恒定，并且横向速度相关性崩溃为一条曲线。 （c）2006 Elsevier Inc.保留所有权利。

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