Measurements of the Effects of Streamwise Riblets on Boundary Layer Turbulence-Reference-Cited by-同舟云学术

Measurements of the Effects of Streamwise Riblets on Boundary Layer Turbulence

Published:2017-08-11 Issue:11 Volume:139 Page:
ISSN:0098-2202
Container-title:Journal of Fluids Engineering
language:en
Short-container-title:

Author:

Ancrum Derek B.¹,Yaras Metin I.²

Affiliation:

1. Department of Mechanical and Aerospace Engineering, Carleton University, Ottawa, ON K1S 5B6, Canada

2. Professor Department of Mechanical and Aerospace Engineering, Carleton University, Ottawa, ON K1S 5B6, Canada e-mail:

Abstract

This study presents experimental results on the effects of riblets on the coherent structures of turbulence within a turbulent spot. The riblet spacings of the study correspond to 0.5 and 1.5 times the natural spacing of the low-speed streak. The cross-sectional dimensions of the riblets were chosen to control the spatial distribution of wave packets consisting of streamwise-aligned hairpin vortices. Both riblet spacings demonstrated effective control on the spanwise positioning of the wave packets. The wider-spaced riblets reduced spanwise mutual interaction between wave packets. The closer-spaced riblets promoted this interaction via spanwise-oriented vortical structures which produced stronger turbulent fluctuations.

Publisher

ASME International

Subject

Mechanical Engineering

Link

http://asmedigitalcollection.asme.org/fluidsengineering/article-pdf/doi/10.1115/1.4037044/6200456/fe_139_11_111203.pdf

Reference47 articles.

1. Turbulence Control in Wall Flows;Annu. Rev. Fluid Mech.,1989

2. Aircraft Drag Reduction—A Review;Proc. Inst. Mech. Eng., Part G,2003

3. A Visual Study of Turbulent Spots;J. Fluid Mech.,1981

4. Investigation of a Turbulent Spot Using Multi-Plane Stereo Particle Image Velocimetry;Exp. Fluids,2004

5. An Experimental Study of Artificially-Generated Turbulent Spots Under Strong Favorable Pressure Gradients and Freestream Turbulence;ASME J. Fluids Eng.,2007

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