Imperial College London
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DrKevinGouder

Faculty of Engineering, Department of Aeronautics

Research Fellow
 
 
 
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Contact

 

+44 (0)20 7594 5088kevin.gouder04 Website

 
 
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Location

 

115Roderic Hill BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Zhao:2016:10.1016/j.jfluidstructs.2016.01.013,
author = {Zhao, X and Gouder, K and Graham, JMR and Limebeer, DJN},
doi = {10.1016/j.jfluidstructs.2016.01.013},
journal = {Journal of Fluids and Structures},
pages = {384--412},
title = {Buffet loading, dynamic response and aerodynamic control of a suspension bridge in a turbulent wind},
url = {http://dx.doi.org/10.1016/j.jfluidstructs.2016.01.013},
volume = {62},
year = {2016}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - This paper describes experiments relating to the buffet response and control of a section of a long-span suspension bridge deck elastically mounted as part of a wind tunnel experiment. The bridge section is subject to grid generated flow turbulence. Two grids are used — one is a standard biplanar grid, while the second is a new design that provides larger turbulence length scales. The buffet response results are compared with admittances calculated using unsteady, three-dimensional, lifting-surface theory that extends standard two-dimensional Sears theory. The bridge deck heave and pitch responses are predicted with comparisons made with wind tunnel measurements. In order to suppress buffeting, and increase the decks critical flutter speed, the deck model is fitted with controllable leading- and trailing-edge flaps. Two sets of passive controllers, which use the flap angles as the control inputs, are demonstrated and evaluated for their capability to suppress the buffet response of the deck and increase its critical flutter speed. The first set of controllers sense the decks position (pitch angle and heave, or pitch angle alone), whilst the second set (which are mechanical controllers) sense the vertical velocity of the flap hinge points. The control system design problem is solved as a mixed H2/H∞ optimisation problem. The wind tunnel experiments show that these control systems can reduce considerably the decks buffet response, whilst simultaneously increasing its critical flutter speed.
AU  - Zhao,X
AU  - Gouder,K
AU  - Graham,JMR
AU  - Limebeer,DJN
DO  - 10.1016/j.jfluidstructs.2016.01.013
EP  - 412
PY  - 2016///
SN  - 1095-8622
SP  - 384
TI  - Buffet loading, dynamic response and aerodynamic control of a suspension bridge in a turbulent wind
T2  - Journal of Fluids and Structures
UR  - http://dx.doi.org/10.1016/j.jfluidstructs.2016.01.013
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000374601300022&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - http://hdl.handle.net/10044/1/33665
VL  - 62
ER  -
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