Influence of upstream cylinder on flow-induced vibration and heat transfer of downstream cylinder

Ding, Lin; Han, Yuxiong; Yang, Zuomei; Zhang, Li; He, Haoyu

doi:10.1016/j.ijthermalsci.2022.107519

Cited by 20 publications

(1 citation statement)

References 43 publications

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“…These cylindrical parts may experience flow-induced vibration (FIV) due to the exertion of oscillating aero-hydrodynamic forces (Khan et al , 2018). These structural movements have been shown to affect convective heat transfer, especially in the synchronization (lock-in) zone where the magnitude of the oscillations increases due to the correlation between the natural frequency of the oscillator and the vortex shedding frequency (Izadpanah et al , 2018; Khan et al , 2020; Yang et al , 2020; Rabiee and Farahani, 2020; Sun et al , 2021; Su et al , 2019; Mosaferi et al , 2022; Ding et al , 2022; Ebrahimi et al , 2021; Barati et al , 2022; Zou et al , 2022).…”

Section: Introductionmentioning

confidence: 99%

Heat transfer characteristics in turbulent FIV of three circular cylinders with different isosceles-triangle arrangements

Esmaeili

Rabiee

2023

HFF

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Purpose This study aims to numerically explore the heat transfer characteristics in turbulent two-degree-of-freedom vortex-induced vibrations (VIVs) of three elastically mounted circular cylinders. Design/methodology/approach The cylinders are at the vertices of an isosceles triangle with a base and height that are the same. The finite volume technique is used to calculate the Reynolds-averaged governing equations, whereas the structural dynamics equations are solved using the explicit integration method. Simulations are performed for three different configurations, constant mass ratio and natural frequency, as well as distinct reduced velocity values. Findings As a numerical challenge, the super upper branch observed in the experiment is well-captured by the current numerical simulations. According to the computation findings, the vortex-shedding around the cylinders increases flow mixing and turbulence, hence enhancing heat transfer. At most reduced velocities, the Nusselt number of downstream cylinders is greater than that of upstream cylinders due to the impact of wake-induced vibration, and the maximum heat transfer improvement of these cylinders is 21% (at Ur = 16), 23% (at Ur = 5) and 20% (at Ur = 15) in the first, second and third configurations, respectively. Originality/value The main novelty of this study is inspecting the thermal behavior and turbulent flow–induced vibration of three circular cylinders in the triangular arrangement.

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