A Caltech Library Service

Vortical Gusts: Experimental Generation and Interaction with Wing

Hufstedler, Esteban A. L. and McKeon, Beverley J. (2019) Vortical Gusts: Experimental Generation and Interaction with Wing. AIAA Journal, 57 (3). pp. 921-931. ISSN 0001-1452.

[img] PDF - Published Version
See Usage Policy.


Use this Persistent URL to link to this item:


We describe the experimental generation of isolated vortical gusts and the interaction between these gusts and a downstream airfoil at a Reynolds number of 20,000. A standard method of generating a vortical gust has been to rapidly pitch an airfoil. A different approach is presented here: heaving a plate across a tunnel and changing direction rapidly to release a vortex. This method is motivated by the desire to limit a test article’s exposure to the wake of the gust generator by moving it to the side of the tunnel. Two suites of experiments were performed to characterize the performance of the gust generators and to measure the forces on and flow around the downstream airfoil. The novel mechanism allowed for measurement of the resumption of vortex shedding from the downstream airfoil, which was impossible with the pitching generator.

Item Type:Article
Related URLs:
URLURL TypeDescription
Hufstedler, Esteban A. L.0000-0001-7162-920X
McKeon, Beverley J.0000-0003-4220-1583
Additional Information:© 2019 by Esteban A. L. Hufstedler and Beverley J. McKeon. Published by the American Institute of Aeronautics and Astronautics, Inc. Presented as Paper 2016-4257 at the AIAA 46th AIAA Fluid Dynamics Conference, Washington, D.C., 13–17 June 2016; received 15 November 2017; revision received 18 August 2018; accepted for publication 18 December 2018; published online 29 January 2019. The authors would like to thank the reviewers for their help in significantly improving this manuscript. This research was funded by the Gordon and Betty Moore Foundation through grant GBMF#2645 to the California Institute of Technology.
Funding AgencyGrant Number
Gordon and Betty Moore FoundationGBMF-2645
Other Numbering System:
Other Numbering System NameOther Numbering System ID
AIAA Paper2016-4257
Record Number:CaltechAUTHORS:20190314-082614909
Persistent URL:
Official Citation:Vortical Gusts: Experimental Generation and Interaction with Wing. Esteban A. L. Hufstedler and Beverley J. McKeon AIAA Journal 2019 57:3, 921-931; doi: 10.2514/1.J056914
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:93796
Deposited By: Tony Diaz
Deposited On:14 Mar 2019 15:35
Last Modified:14 Mar 2019 15:35

Repository Staff Only: item control page