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

Jijian Lian; Zhichuan Wu; Shuai Yao; Xiang Yan; Xiaoqun Wang; Zhaolin Jia; Yan Long; Nan Shao; Defeng Yang; Xinyi Li

LAPSE

Living Archive for Process Systems Engineering

LAPSE:2023.35514

Published Article

LAPSE:2023.35514

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

Jijian Lian, Zhichuan Wu, Shuai Yao, Xiang Yan, Xiaoqun Wang, Zhaolin Jia, Yan Long, Nan Shao, Defeng Yang, Xinyi Li

May 2, 2023

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 mosc. 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 × 104 ≤ Re ≤ 1.25 × 105. 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 ≤ RL ≤ 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 Pharn = 21.04 W appears at L/D = 4 (Ur = 12.25, K = 2000 N/m, RL = 8 Ω), corresponding to the energy conversion efficiency ηharn = 4.67%.

Record ID

LAPSE:2023.35514

Keywords

flow-induced motion, gap ratio, sharp jump, tandem, triangular prism

Subject

Other

Suggested Citation

Lian J, Wu Z, Yao S, Yan X, Wang X, Jia Z, Long Y, Shao N, Yang D, Li X. Experimental Investigation of Flow-Induced Motion and Energy Conversion for Two Rigidly Coupled Triangular Prisms Arranged in Tandem. (2023). LAPSE:2023.35514

Author Affiliations

Lian J: 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; H
Wu Z: 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
Yao S: 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 X: State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, 135 Yaguan Road, Jinnan District, Tianjin 300072, China [ORCID]
Wang X: 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
Jia Z: 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
Long Y: 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
Shao N: 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
Yang D: State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, 135 Yaguan Road, Jinnan District, Tianjin 300072, China
Li X: 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

Journal Name

Energies

Volume

15

Issue

21

First Page

8190

Year

2022

Publication Date

2022-11-02