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Open AccessArticle

Wake Flow Characteristics over an Articulated Lorry Model with/without AC-DBD Plasma Actuation

1
Department of Mechanical Engineering Sciences, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford GU2 7XH, UK
2
Department of Aerospace Engineering, Indian Institute of Technology Madras, Chennai 600036, India
3
Division of Aerospace Sciences, School of Engineering, University of Glasgow, Glasgow G12 8QQ, UK
*
Author to whom correspondence should be addressed.
Appl. Sci. 2019, 9(12), 2426; https://doi.org/10.3390/app9122426
Received: 1 May 2019 / Revised: 23 May 2019 / Accepted: 10 June 2019 / Published: 14 June 2019
(This article belongs to the Section Mechanical Engineering)
The wake flow characteristics of a 1:20 scale articulated lorry model with a linear Alternate Current Dielectric Barrier Discharge (AC-DBD) plasma actuation implemented was experimentally investigated. Time-averaged velocity, turbulence, and vorticity information along the centreline of the model were constructed using a two-component particle image velocimetry technique. In addition, force balance was used to measure the time-average drag force acting on the model with and without the use of AC-DBD plasma actuation. In general, the AC-DBD plasma actuation showed negligible effect in changing the drag coefficient of the test model. Moreover, implementing the AC-DBD plasma actuation around the rear end of the trailer model could neither alter the size nor the reverse flow velocity in the wake region. In contrast, the AC-DBD plasma actuation increased the levels of fluctuation in the flow turbulence kinetic energy and vorticity but showed no observable effect to alter the frequency response of the flow in the wake region. It is deduced that the use of AC-DBD plasma actuation indeed generated no flow control effect at the rear end of an articulated lorry trailer. View Full-Text
Keywords: heavy vehicle aerodynamics; plasma actuation; tractor-trailer; wind tunnel test heavy vehicle aerodynamics; plasma actuation; tractor-trailer; wind tunnel test
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MDPI and ACS Style

Lo, K.-H.; Sriram, R.; Kontis, K. Wake Flow Characteristics over an Articulated Lorry Model with/without AC-DBD Plasma Actuation. Appl. Sci. 2019, 9, 2426.

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