Numerical investigation of vortex induced vibration effects on the heat transfer for various aspect ratios ellipse cylinder

Guang, Chen; Liang, Xifeng; Li, Xiaobai; Zhou, Dan; Lien, Fue‐Sang

doi:10.1016/j.ijthermalsci.2021.107138

Cited by 15 publications

(3 citation statements)

References 26 publications

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“…These researchers examined the VIV response (amplitude, phase lag, fluid force), the flow pattern in the wake, and the hysteresis phenomenon and found that the peak amplitude increases with an increasing AR. Chen et al [126] found that the aspect ratio has a significant effect on the VIV response and on the heat transfer to the elliptical cylinder. Leontini et al [127] investigated the FIV response of an elliptic cylinder with a fixed aspect ratio of 1.5 for various angles of attack AOA (viz., the angle between flow direction and major axis of ellipse) in the range 0 • < AOA < 90 • .…”

Section: Two-dimensional or Three-dimensional Numerical Simulations O...mentioning

confidence: 99%

Modelling of Flow-Induced Vibration of Bluff Bodies: A Comprehensive Survey and Future Prospects

Cheng

McConkey

et al. 2022

Energies

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A comprehensive review of modelling techniques for the flow-induced vibration (FIV) of bluff bodies is presented. This phenomenology involves bidirectional fluid–structure interaction (FSI) coupled with non-linear dynamics. In addition to experimental investigations of this phenomenon in wind tunnels and water channels, a number of modelling methodologies have become important in the study of various aspects of the FIV response of bluff bodies. This paper reviews three different approaches for the modelling of FIV phenomenology. Firstly, we consider the mathematical (semi-analytical) modelling of various types of FIV responses: namely, vortex-induced vibration (VIV), galloping, and combined VIV-galloping. Secondly, the conventional numerical modelling of FIV phenomenology involving various computational fluid dynamics (CFD) methodologies is described, namely: direct numerical simulation (DNS), large-eddy simulation (LES), detached-eddy simulation (DES), and Reynolds-averaged Navier–Stokes (RANS) modelling. Emergent machine learning (ML) approaches based on the data-driven methods to model FIV phenomenology are also reviewed (e.g., reduced-order modelling and application of deep neural networks). Following on from this survey of different modelling approaches to address the FIV problem, the application of these approaches to a fluid energy harvesting problem is described in order to highlight these various modelling techniques for the prediction of FIV phenomenon for this problem. Finally, the critical challenges and future directions for conventional and data-driven approaches are discussed. So, in summary, we review the key prevailing trends in the modelling and prediction of the full spectrum of FIV phenomena (e.g., VIV, galloping, VIV-galloping), provide a discussion of the current state of the field, present the current capabilities and limitations and recommend future work to address these limitations (knowledge gaps).

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Section: Two-dimensional or Three-dimensional Numerical Simulations O...mentioning

confidence: 99%

Modelling of Flow-Induced Vibration of Bluff Bodies: A Comprehensive Survey and Future Prospects

Cheng

McConkey

et al. 2022

Energies

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“…Dynamic mesh technology has a slow self-checking speed of grid reconstruction in the later stages of calculation. Conversely, overset mesh technology has an excellent performance in mesh coupling and is widely used in the simulation of aerodynamic characteristics of high-speed trains and wind turbines (Chen et al 2021b(Chen et al , 2021a(Chen et al , 2022Liu et al 2020). In this study, the overset mesh technology was adopted to simulate the relative movement between the train and tunnel.…”

Section: Computational Mesh and Monitoring Pointsmentioning

confidence: 99%

Numerical Analysis of the Effect of Streamlined Nose Length on Slipstream of High-Speed Train Passing through a Tunnel

2022

JAFM

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The improved delayed detached eddy simulation (IDDES) method was employed based on the shear-stress transport (SST) - two-equation turbulence model to simulate the slipstream distribution characteristics of a high-speed train traversing a tunnel. The accuracy of the numerical simulation method was verified through a full-scale test. First, the wake vortex structure and the distribution of slipstreams of the train with a streamlined nose length of 7 m running in a tunnel were analyzed. Then, the influence of the streamlined nose length on the wake dynamics and slipstream was compared and analyzed. The slipstream positive peak decreased with increasing distance from the top of the rail and center of the track. As the streamlined nose length increases, the vortex intensity in the wake area weakens; moreover, the influence ranges of the wake vortex and the slipstream positive peak value become smaller. Compared with the results of a train having a streamlined nose length of 5 m, the slipstream positive peak value at 1.4 m from the top of the rail and 100 m from the tunnel entrance decreased by 46.6% from that of a train with a streamlined nose length of 9 m.

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“…Therefore, how the flow-induced vibration affects the stress distribution and heat and mass transfer performance of hollow fiber membranes is worthy of study. The effect of heat transfer enhancement caused by flow-induced vibration has been observed in elastic tube bundles, and the heat transfer coefficient can be enhanced by about 20-30% compared with steady flow conditions [29][30][31][32]. Unlike the rigid metallic tubes in shell and tube heat exchangers, hollow fiber membranes are flexible tube bundles that are prone to vibration due to the influence of fluid flow and gravity.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Flow-Induced Vibration on Heat and Mass Transfer Performance of Hollow Fiber Membranes in the Humidification/Dehumidification Process

et al. 2021

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Cross-flow hollow fiber membranes are commonly applied in humidification/dehumidification. Hollow fiber membranes vibrate and deform under the impinging force of incoming air and the gravity of liquid in the inner tube. In this study, fiber deformation was caused by the pulsating flow of air. With varied pulsating amplitudes and frequencies, single-fiber deformation was investigated numerically using the fluid–structure interaction technique and verified with experimental data testing with a laser vibrometer. Then, the effect of pulsating amplitude and frequency on heat and mass transfer performance of the hollow fiber membrane was analyzed. The maximum fiber deformation along the airflow direction was far larger than that perpendicular to the flow direction. Compared with the case where the fiber did not vibrate, increasing the pulsation amplitude could strengthen Nu by 14–87%. Flow-induced fiber vibration could raise the heat transfer enhancement index from 13.8% to 80%. The pulsating frequency could also enhance the heat transfer of hollow fiber membranes due to the continuously weakened thermal boundary layer. With the increase in pulsating amplitude or frequency, the Sh number or Em under vibrating conditions can reach about twice its value under non-vibrating conditions.

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Numerical investigation of vortex induced vibration effects on the heat transfer for various aspect ratios ellipse cylinder

Cited by 15 publications

References 26 publications

Modelling of Flow-Induced Vibration of Bluff Bodies: A Comprehensive Survey and Future Prospects

Modelling of Flow-Induced Vibration of Bluff Bodies: A Comprehensive Survey and Future Prospects

Numerical Analysis of the Effect of Streamlined Nose Length on Slipstream of High-Speed Train Passing through a Tunnel

The Effect of Flow-Induced Vibration on Heat and Mass Transfer Performance of Hollow Fiber Membranes in the Humidification/Dehumidification Process

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