Numerical approaches to capture fluid–structure interaction considering interfaces for offshore structures

Deleted Journal, Journal Year: 2025, Volume and Issue: 2(2)

Published: Jan. 17, 2025

Recent developments in offshore renewable energy facilities, such as wind turbines and photovoltaic generators, often face challenges posed by the harsh environments to which these structures are exposed. To ensure continuous operation of reliable numerical methods urgently needed capture dynamics ocean waves their complex interactions with large-scale structures. With development computational fluid techniques, advanced algorithms have been proposed fluid–structure (FSI) applications. Although a variety introduced, comprehensive review all latest modeling has not available literature. address this gap, paper reviews recent schemes for dealing FSI problems The difficulties faced summarized, future directions advancing research into field also discussed.

Language: Английский

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A coupled particle dynamics-lattice Boltzmann method model for particle-resolved direct numerical simulation of gas–liquid–solid flow with an irregular particle expressed by multi-sphere algorithm

Physics of Fluids, Journal Year: 2025, Volume and Issue: 37(2)

Published: Feb. 1, 2025

In this paper, we develop a lattice Boltzmann (LB) model for simulating the gas–liquid–solid three-phase flow. Based on gas–solid two-phase fluid in framework of method (LBM), multiphase fluid–solid two-way coupling algorithm is proposed. model, fluid–fluid interface tracked using phase-field method. Kinetic-theory-based boundary treatment, such as interpolated bounce back, combined with momentum exchange methods handle flow–particle interactions. Particle dynamics (PD) equation depicts particle's movement and direction. Multi-sphere inserted into LBM frame to efficiently express irregular particle borrowing from idea multi-sphere discrete element frame. Several typical benchmark cases are used validate present including flow around static rotating cylinder, wetting behavior regular particles liquid–gas interface, setting cylindrical particle, sinking pulled out water. The numerical results show that agrees well analytical solutions, experimental data, published literature. coupled PD-LBM validated can accurately simulate any system containing moving contact line phenomena.

Language: Английский

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A hybrid immersed boundary-lattice Boltzmann method for flow and heat transfer within a fluid heat exchanger

Physics of Fluids, Journal Year: 2025, Volume and Issue: 37(3)

Published: March 1, 2025

This study extended a hybrid immersed boundary-lattice Boltzmann method (IB-LBM) to analyze the hydrodynamic and thermodynamic behaviors of fluid heat exchanger (FHE) with an asymptotic tube configuration. The effects Reynolds number (Re), superheat levels, porosity, cylinder arrangements on temperature flow velocity were primarily examined. Several parameters introduced as metrics evaluate thermal efficiency FHE. results revealed that Re significantly influenced Pressure drops increased higher Re, while rapid decline in average flux was attributed reduced conductive transfer caused by decreasing difference. Moreover, levels directly impacted outlet but affected frequency fluctuations. frequency, determined through fast Fourier analysis, helps avoid resonance structure's natural thereby preventing potential structural failures. Additionally, five different porosity configurations analyzed their impact performance findings from this research provide valuable insights for enhancing

Language: Английский

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Pulsation Analysis of Hose Pumps with Different Roller Counts Based on Two-Way FSI

Processes, Journal Year: 2024, Volume and Issue: 13(1), P. 42 - 42

Published: Dec. 27, 2024

Xinjiang, as a major agricultural region, offers extensive application potential for hose pumps, given their excellent performance fertilization devices. Analyzing the pulsation characteristics of pumps during operation is valuable reducing noise and extending pump service life. To investigate unsteady flow with different roller numbers, this study adopts bidirectional fluid-structure interaction (FSI) method utilizes ANSYS 19.0 commercial finite element software to analyze outlet inlet pressure pulsations, velocity distribution field at intermediate plane both two-roller three-roller transporting high low Reynolds number fluids under same working conditions. It was observed that exhibited higher compared intensity lower in than conditions, an analysis provided on reasons phenomenon. This theoretical support selection further optimization designs. reduce negative effects it recommended increase rollers design while also considering shape casing or using feedback control systems adjust intensity.

Language: Английский

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