波浪破碎时空气-水界面速度和动能变化的可视化

IF 4.4 2区 工程技术 Q1 ENGINEERING, OCEAN
Ruey-Syan Shih , Chi-Yu Li , Ching-Tang Huang
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引用次数: 0

摘要

本研究考察了海岸环境中波浪破碎引起的气相湍流多相流动动力学,重点研究了空隙比量化及其对流动特性、动能和密度相关能量传递的影响。空气的夹带、气泡的形成和破碎波的高速梯度给传统的流量测量带来了挑战,而瞬态空气-水相互作用进一步使气相动力学分析复杂化。为了解决这些问题,粒子图像测速技术(PIV)被用于量化与海上工程相关的三种不同破波条件下的气相现象和速度分布。PIV可以详细分析水-空气界面的速度场,捕捉周围空气相中动能和动量的变化。此外,该研究还比较了水和气的动量分布,并研究了波浪冲击引起的动能变化。在不透水的斜坡底部上,分析了不同破波类型的水气速度场的演化,为海岸水动力学中空气-水相互作用机制提供了见解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Visualization of velocity and kinetic energy variations at the air-water interface during wave breaking
This study examines turbulent, multiphase flow dynamics in the gas phase induced by wave breaking in coastal environments, focusing on void ratio quantification and its effects on flow characteristics, kinetic energy, and density-related energy transfer. The entrainment of air, bubble formation, and high-velocity gradients from breaking waves pose challenges for conventional flow measurements, while transient air–water interactions further complicate the analysis of gas-phase dynamics. To address these complexities, Particle Image Velocimetry (PIV) is employed to quantify gas-phase phenomena and velocity distributions under three distinct wave-breaking conditions relevant to offshore engineering. PIV enables detailed analysis of velocity fields at the water–air interface, capturing variations in kinetic energy and momentum in the surrounding air phase. Additionally, the study compares water and gas momentum distributions and investigates kinetic energy variations induced by wave impacts. The evolution of water–gas velocity fields is also analyzed across different wave-breaking types over an impermeable sloped bottom, providing insights into air–water interaction mechanisms in coastal hydrodynamics.
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来源期刊
Applied Ocean Research
Applied Ocean Research 地学-工程:大洋
CiteScore
8.70
自引率
7.00%
发文量
316
审稿时长
59 days
期刊介绍: The aim of Applied Ocean Research is to encourage the submission of papers that advance the state of knowledge in a range of topics relevant to ocean engineering.
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