韩阳, 范毅伟, 郭春雨, 王超, 于凯. PIV技术在孤立波流场测量教学实验中的应用[J]. 实验科学与技术, 2021, 19(4): 117-121. DOI: 10.12179/1672-4550.20200004
引用本文: 韩阳, 范毅伟, 郭春雨, 王超, 于凯. PIV技术在孤立波流场测量教学实验中的应用[J]. 实验科学与技术, 2021, 19(4): 117-121. DOI: 10.12179/1672-4550.20200004
HAN Yang, FAN Yiwei, GUO Chunyu, WANG Chao, YU Kai. Application of PIV Technique in Teaching Experiment of Solitary Wave Flow Field Measurement[J]. Experiment Science and Technology, 2021, 19(4): 117-121. DOI: 10.12179/1672-4550.20200004
Citation: HAN Yang, FAN Yiwei, GUO Chunyu, WANG Chao, YU Kai. Application of PIV Technique in Teaching Experiment of Solitary Wave Flow Field Measurement[J]. Experiment Science and Technology, 2021, 19(4): 117-121. DOI: 10.12179/1672-4550.20200004

PIV技术在孤立波流场测量教学实验中的应用

Application of PIV Technique in Teaching Experiment of Solitary Wave Flow Field Measurement

  • 摘要: 粒子图像测速(particle image velocimetry, PIV)是一种先进的流体力学实验技术, 其在实验流体力学、实际工程应用等诸多领域具有广泛的应用。孤立波是一种只出现在浅水水域且只有一个波峰或波谷的移动波,这种波动具有准粒子性,其理论用于研究波浪破碎水深,对近海结构物的设计具有指导性作用。为了让学生直观地了解PIV技术同时认识孤立波的传递演化过程,提出了一种适用于孤立波精细流场的PIV测量平台,测量了二维孤立波在传递、爬坡变形、破碎过程的流场的速度矢量分布、速度标量分布、涡量分布等精细流场信息。通过此次实验使学生们对孤立波的传递与变形这一流体现象有更直观的印象,并了解了PIV技术原理及使用方法,加深学生对知识的理解,激发学生的学习兴趣,培养动手能力,提高创新能力,为未来科研探索奠定良好的基础。

     

    Abstract: Particle Image Velocimetry (PIV), as an advanced experimental technique of fluid mechanics, has been widely used in many fields such as experimental fluid mechanics and practical engineering applications. The solitary wave is a kind of advanced wave that has only one peak or trough and only appears in shallow water. This kind of wave is quasi-particle, and its theory is used to study the water depth of wave breaking, which has a guiding effect on the design of offshore structures. To let students understand PIV technology visually, and at the same time, learn the transmission and evolution process of solitary waves, this paper puts forward a PIV measurement platform for the fine flow field of solitary waves, which measures the velocity vector distribution, velocity scalar distribution and vorticity distribution of the flow field in the transmission, climbing deformation and crushing process of the two-dimensional solitary wave. Through this experiment, students have a more direct impression of the fluid phenomenon of transmission and deformation of solidarity waves and understand the principle and use of PIV technology. This experiment deepens students’ understanding of the knowledge, stimulates students’ interest in learning, cultivates their practical ability, improves their innovation ability, and lays a good foundation for future scientific research and exploration.

     

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