Nonlinear vortex dynamic analysis of flow-induced vibration of a flexible splitter plate attached to a square cylinder

Xu, Bin; Wang, Hao; Deng, Yilin; Shen, Xipeng; Li, Geng; Liu, Keyang; Yang, Gang

doi:10.1016/j.oceaneng.2022.112433

Cited by 13 publications

(1 citation statement)

References 26 publications

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“…The results show that the reattachment and co-shedding phenomenon appear when the spacing ratio is smaller (G = 2 and 3), but the co-shedding phenomenon only appears at a larger spacing ratio (G = 4-6). Xu et al [44] studied flow-induced vibration of a flexible splitter plate attached behind a square cylinder numerically. The vortex shedding of the upstream square cylinder excites the vibration of the flexible plate, which can be observed significantly in the tests.…”

Section: Introductionmentioning

confidence: 99%

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

Lian

Shuai

et al. 2022

Energies

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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%.

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Section: Introductionmentioning

confidence: 99%