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Wake Flow Investigation on Notchback MIRA Model by PIV Experiments

Author

Listed:
  • Yingchao Zhang

    (State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130015, China)

  • Jinji Li

    (State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130015, China)

  • Zijie Wang

    (State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130015, China)

  • Qiliang Wang

    (State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130015, China)

  • Hongyu Gong

    (State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130015, China)

  • Zhe Zhang

    (State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130015, China)

Abstract

To deepen our understanding of the flow field and flow mechanism of a car-like model, in this paper, an experimental investigation of the flow field of MIRA notchback 1/8 scale model is carried out using Particle Image Velocimetry (PIV) method. The tests are conducted in an open circuit wind tunnel at a Reynolds number of 9.16 × 10 5 . In order to obtain the detailed flow field structure of the notchback model, the PIV method was used to capture the flow field images from three orthogonal directions. By studying the vorticity and velocity vector figures of both the time-averaged and instantaneous states, a three-dimensional flow field schematic of the notchback model is summarized, and the formation mechanism and development process of the vortices are analyzed. This study not only provides an intuitive display of the three-dimensional flow field structure of the MIRA notchback model but, more importantly, it provides a reference for the development of automobile aerodynamic drag reduction by analyzing the flow mechanism, which is beneficial to energy conservation.

Suggested Citation

  • Yingchao Zhang & Jinji Li & Zijie Wang & Qiliang Wang & Hongyu Gong & Zhe Zhang, 2021. "Wake Flow Investigation on Notchback MIRA Model by PIV Experiments," Energies, MDPI, vol. 14(15), pages 1-21, July.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:15:p:4568-:d:603341
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    References listed on IDEAS

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    1. Dirk Wieser & Christian Navid Nayeri & Christian Oliver Paschereit, 2020. "Wake Structures and Surface Patterns of the DrivAer Notchback Car Model under Side Wind Conditions," Energies, MDPI, vol. 13(2), pages 1-18, January.
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