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Experimental Investigation of Flow-Induced Motion and Energy Conversion for Two Rigidly Coupled Triangular Prisms Arranged in Tandem

Author

Listed:
  • Jijian Lian

    (School of Water Conservancy and Hydroelectric Power, Hebei University of Engineering, Handan 056038, China
    State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, 135 Yaguan Road, Jinnan District, Tianjin 300072, China
    Hebei Key Laboratory of Intelligent Water Conservancy, Hebei University of Engineering, Handan 056038, China)

  • Zhichuan Wu

    (School of Water Conservancy and Hydroelectric Power, Hebei University of Engineering, Handan 056038, China
    Hebei Key Laboratory of Intelligent Water Conservancy, Hebei University of Engineering, Handan 056038, China)

  • Shuai Yao

    (School of Water Conservancy and Hydroelectric Power, Hebei University of Engineering, Handan 056038, China
    Hebei Key Laboratory of Intelligent Water Conservancy, Hebei University of Engineering, Handan 056038, China)

  • Xiang Yan

    (State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, 135 Yaguan Road, Jinnan District, Tianjin 300072, China)

  • Xiaoqun Wang

    (School of Water Conservancy and Hydroelectric Power, Hebei University of Engineering, Handan 056038, China
    Hebei Key Laboratory of Intelligent Water Conservancy, Hebei University of Engineering, Handan 056038, China)

  • Zhaolin Jia

    (School of Water Conservancy and Hydroelectric Power, Hebei University of Engineering, Handan 056038, China
    Hebei Key Laboratory of Intelligent Water Conservancy, Hebei University of Engineering, Handan 056038, China)

  • Yan Long

    (School of Water Conservancy and Hydroelectric Power, Hebei University of Engineering, Handan 056038, China
    Hebei Key Laboratory of Intelligent Water Conservancy, Hebei University of Engineering, Handan 056038, China)

  • Nan Shao

    (School of Water Conservancy and Hydroelectric Power, Hebei University of Engineering, Handan 056038, China
    Hebei Key Laboratory of Intelligent Water Conservancy, Hebei University of Engineering, Handan 056038, China)

  • Defeng Yang

    (State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, 135 Yaguan Road, Jinnan District, Tianjin 300072, China)

  • Xinyi Li

    (School of Water Conservancy and Hydroelectric Power, Hebei University of Engineering, Handan 056038, China
    Hebei Key Laboratory of Intelligent Water Conservancy, Hebei University of Engineering, Handan 056038, China)

Abstract

A series of experimental tests on flow-induced motion (FIM) and energy conversion of two rigidly coupled triangular prisms (TRCTP) in tandem arrangement were conducted in a recirculating water channel with the constant oscillation mass m osc . The incoming flow velocity covered the range of 0.395 m/s ≤ U ≤ 1.438 m/s, corresponding to the Reynolds number range of 3.45 × 10 4 ≤ Re ≤ 1.25 × 10 5 . The upstream and downstream triangular prisms with a width of 0.1 m and length of 0.9 m were connected by two rectangular endplates. Seven stiffness (1000 N/m ≤ K ≤ 2400 N/m), five load resistances (8 Ω ≤ R L ≤ 23 Ω), and five gap ratios (1 ≤ L / D ≤ 4) were selected as the parameters, and the FIM responses and energy conversion of TRCTP in tandem were analyzed and discussed to illustrate the effects. The experimental results indicate that the “sharp jump” phenomenon may appear at L / D = 2 and L / D = 3 significantly, with substantially increasing amplitude and decreasing oscillation frequency. The maximum amplitude ratio in the experiments is A* Max = 2.24, which appears after the “sharp jump” phenomenon at L / D = 3. In the present tests, the optimal active power P harn = 21.04 W appears at L / D = 4 ( U r = 12.25, K = 2000 N/m, R L = 8 Ω), corresponding to the energy conversion efficiency η harn = 4.67%.

Suggested Citation

  • Jijian Lian & Zhichuan Wu & Shuai Yao & Xiang Yan & Xiaoqun Wang & Zhaolin Jia & Yan Long & Nan Shao & Defeng Yang & Xinyi Li, 2022. "Experimental Investigation of Flow-Induced Motion and Energy Conversion for Two Rigidly Coupled Triangular Prisms Arranged in Tandem," Energies, MDPI, vol. 15(21), pages 1-20, November.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:21:p:8190-:d:961557
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    References listed on IDEAS

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