Title

Constant Reynolds number turbulence downstream of an orificed perforated plate

Document Type

Article

Publication Date

8-1-2007

Publication Title

Experimental Thermal and Fluid Science

Volume

31

Issue

8

First Page

897

Keywords

Orificed perforated plate, Quasi-isotropic turbulence, Self-similarity

Last Page

908

Abstract

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 mm 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. © 2006 Elsevier Inc. All rights reserved.

DOI

10.1016/j.expthermflusci.2006.09.007

ISSN

08941777

Link to Full Text

Share

COinS