Journal ArticleDOI
Turbulent drag reduction research at NASA langley: progress and plans☆
TLDR
In this article, NASA-Langley research efforts planned at NASA Langley in view of results obtained to date in passive turbulent drag reduction experiments are discussed, including heat transfer-augmentation, noise-reduction, turboprop/fuselage interaction noise reduction, and other advantages.About:
This article is published in International Journal of Heat and Fluid Flow.The article was published on 1988-09-01. It has received 107 citations till now. The article focuses on the topics: Parasitic drag & Drag.read more
Citations
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BookDOI
The MEMS Handbook
TL;DR: In this paper, the authors present a detailed overview of the history of the field of flow simulation for MEMS and discuss the current state-of-the-art in this field.
Journal ArticleDOI
Bioinspired self-cleaning surfaces with superhydrophobicity, superoleophobicity, and superhydrophilicity
TL;DR: In this paper, an overview of self-cleaning surfaces inspired by nine biological objects is provided: lotus leaves, rice leaves, cicada wings, butterfly wings, snail shell, fish scale, shark skin, pitcher plant, and photosynthesis.
Journal ArticleDOI
Shark-skin surfaces for fluid-drag reduction in turbulent flow: a review
Brian Dean,Bharat Bhushan +1 more
TL;DR: The skin of fast-swimming sharks exhibits riblet structures aligned in the direction of flow that are known to reduce skin friction drag in the turbulent-flow regime.
Journal ArticleDOI
Experiments with three-dimensional riblets as an idealized model of shark skin
TL;DR: In this article, a 3D-riblet surface with sharp-edged fin-shaped elements arranged in an interlocking array was investigated and the turbulent wall shear stress on this surface was measured using direct force balances.
Journal ArticleDOI
Biofouling: lessons from nature.
Gregory D. Bixler,Bharat Bhushan +1 more
TL;DR: A survey of nature's flora and fauna was taken in order to discover new antifouling methods that could be mimicked for engineering applications, and methods currently employed, ranging from coatings to cleaning techniques, are described.
References
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Proceedings ArticleDOI
Optimization and application of riblets for turbulent drag reduction
Michael J. Walsh,A. M. Lindemann +1 more
TL;DR: In this article, the effect of rib details on the riblet drag reduction performance was investigated in boundary layers having different upstream histories and at higher Reynolds numbers than previously reported, and it was found that the drag reduction was dependent on the height and spacing of riblets in law of the wall variables regardless of the free-stream Reynolds number or upstream boundary-layer history.
Proceedings ArticleDOI
Turbulent boundary layer drag reduction using riblets
TL;DR: In this paper, an experimental study of low-speed turbulent boundary layer flow over longitudinally grooved surfaces (i.e., riblets) is discussed, and the results obtained with a highly accurate drag balance indicate that v-groove riblet surfaces can produce consistent net drag reductions as large as 8 percent provided the height and spacing of the grooves in terms of the wall variables are less than 25 wall units.
Journal ArticleDOI
Measurements in the turbulent boundary layer on an ‘infinite’ swept wing
Peter Bradshaw,N. S. Pontikos +1 more
TL;DR: In this article, the results of turbulence measurements on an infinite swept wing, simulated by a duct attached to a blower tunnel, are presented, showing a significant decrease in the magnitude of shear stress compared with an equivalent two-dimensional boundary layer.
Related Papers (5)
Shark-skin surfaces for fluid-drag reduction in turbulent flow: a review
Brian Dean,Bharat Bhushan +1 more