0
Research Papers: Flows in Complex Systems

Flow Control on a Transport Truck Side Mirror Using Plasma Actuators

[+] Author and Article Information
Theodoros Michelis

Department of Aerodynamics,
Delft University of Technology,
Kluyverweg 2,
Delft 2629 HT, The Netherlands
e-mail: t.michelis@tudelft.nl

Marios Kotsonis

Assistant Professor
Department of Aerodynamics,
Delft University of Technology,
Kluyverweg 2,
Delft 2629 HT, The Netherlands
e-mail: m.kotsonis@tudelft.nl

1Corresponding author.

Contributed by the Fluids Engineering Division of ASME for publication in the JOURNAL OF FLUIDS ENGINEERING. Manuscript received October 31, 2014; final manuscript received May 4, 2015; published online July 10, 2015. Assoc. Editor: D. Keith Walters.

J. Fluids Eng 137(11), 111103 (Jul 10, 2015) (6 pages) Paper No: FE-14-1625; doi: 10.1115/1.4030724 History: Received October 31, 2014

A wind tunnel study is conducted toward hybrid flow control of a full scale transport truck side mirror at ReD=3.2×105. A slim guide vane is employed for redirecting high-momentum flow toward the mirror wake region. Leading edge separation from the guide vane is reduced or eliminated by means of an alternating current -dielectric barrier discharge (AC-DBD) plasma actuator. Particle image velocimetry (PIV) measurements are performed at a range of velocities from 15 to 25 m/s and from windward to leeward angles from -5deg to 5deg. Time-averaged velocity fields are obtained at the center of the mirror for three scenarios: (a) reference case lacking any control elements, (b) guide vane only, and (c) combination of the guide vane and the AC-DBD plasma actuator. The comparison of cases demonstrates that at 25 m/s windward conditions (-5deg) the guide vane is capable of recovering 17% momentum with respect to the reference case. No significant change is observed by activating the AC-DBD plasma actuator. In contrast, at leeward conditions (5deg), the guide vane results in a −20% momentum loss that is rectified to a 6% recovery with actuation. The above implies that for a truck with two mirrors, 23% of momentum may be recovered.

FIGURES IN THIS ARTICLE
<>
Copyright © 2015 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Fig. 1

Schematic cross section of a typical AC-DBD plasma actuator (not to scale)

Grahic Jump Location
Fig. 2

Schematic of experimental setup (left not to scale and right to scale). Coordinate axes are parallel and normal to the cabin wall. D = 20 cm, R = 20 cm, Lx = 148 cm, Ly = 75 cm, Lz = 150 cm, G1 = 15 cm, G2 = 5 cm, and α = -5 deg,0 deg,5 deg.

Grahic Jump Location
Fig. 3

Schematic of controlling elements (not to scale): c = 60 mm and t = 5 mm (HV: high-voltage electrode)

Grahic Jump Location
Fig. 4

Measurement stations along the x–z and x–y planes. Note two mirror elements and the corresponding guide vanes placed atop: s = 90 cm, s1 = 22 cm, s2 = 41 cm, and h = 32 cm.

Grahic Jump Location
Fig. 5

Baseline flow for α = 0 deg and U = 25 m/s at stations (a) z2 and (b) z4

Grahic Jump Location
Fig. 6

Baseline flow for α = 0 deg and U∞ = 25m/s at stations (a) y1, (b) y2, and (c) y3

Grahic Jump Location
Fig. 7

Time-averaged velocity fields for U∞ = 25m/s at station z4. Top row: α = 5 deg (leeward), middle row: α = 0 deg, and bottom row: α = -5 deg (windward); left column: baseline flow, middle column: plasma OFF, and right column: plasma ON.

Grahic Jump Location
Fig. 8

Velocity profiles for α = 0 deg,U∞ = 25m/s, x/D = 2.6, and 1 < y/D < 2.35 at station z4. °: baseline flow, × : plasma OFF, and + : plasma ON.

Grahic Jump Location
Fig. 10

Voltage ( × ) and current (°) sample signals

Grahic Jump Location
Fig. 9

Reynolds stress fields for α = 0 deg and U∞ = 25m/s at station z4: (a) baseline flow, (b) plasma OFF, and (c) plasma ON

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In