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Characteristics of a turbulent boundary layer perturbed by spatially-impulsive dynamic roughness

Jacobi, I. and Guala, M. and McKeon, B. J. (2010) Characteristics of a turbulent boundary layer perturbed by spatially-impulsive dynamic roughness. In: 40th Fluid Dynamics Conference and Exhibit, 28 June-1 July 2010, Chicago, IL. http://resolver.caltech.edu/CaltechAUTHORS:20150226-094906075

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Abstract

Statistical and spectral analyses of the manipulation of a canonical zero pressure gradient turbulent boundary layer using static roughness and low-frequency dynamic roughness patches are presented. A shift of spectral energy away from the wall downstream of the roughness patch is observed. The dynamic roughness is shown to disrupt the structure of the boundary layer, while embedding its periodic signature in an extensive stretch of the downstream flow field.


Item Type:Conference or Workshop Item (Paper)
Related URLs:
URLURL TypeDescription
http://arc.aiaa.org/doi/abs/10.2514/6.2010-4475PublisherArticle
http://dx.doi.org/10.2514/6.2010-4475DOIArticle
ORCID:
AuthorORCID
McKeon, B. J.0000-0003-4220-1583
Additional Information:© 2010 The Authors. This work is supported by the Air Force Office of Scientific Research Hypersonics and Turbulence portfolio, under grant #FA9550-08-1-0049 (Program manager John Schmisseur).
Group:GALCIT
Funders:
Funding AgencyGrant Number
Air Force Office of Scientific Research (AFOSR)FA9550-08-1-0049
Other Numbering System:
Other Numbering System NameOther Numbering System ID
AIAA Paper2010-4475
Record Number:CaltechAUTHORS:20150226-094906075
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20150226-094906075
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:55244
Collection:CaltechAUTHORS
Deposited By: Jamie Sei
Deposited On:26 Feb 2015 19:31
Last Modified:21 Sep 2016 22:21

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