气液两相自由表面流动的三维形态重构研究  

THREE-DIMENSIONAL RECONSTRUCTION OF GAS-LIQUID TWO-PHASE FREE SURFACE FLOWS

作　　者：王千[1] 陆昊成 牟泽宇 尤天庆 刘桦[1] WANG Qian;LU Haocheng;MU Zeyu;YOU Tianqing;LIU Hua(MOE Key Laboratory of Hydrodynamics,Shanghai Jiao Tong University,Shanghai 200240,China;Beijing Institute of Astronautical System Engineering,Beijing 100076,China)

机构地区：[1]上海交通大学水动力学教育部重点实验室,上海200240 [2]北京宇航系统工程研究所,北京100076

出　　处：《力学与实践》2024年第6期1132-1144,共13页Mechanics in Engineering

基　　金：国家自然科学基金项目(12102262);中国运载火箭技术研究院CST科技基金资助。

摘　　要：研究气液两相自由表面流动在认识自然和工程应用中具有重要意义。本文重点介绍如何应用双目视觉技术对气液两相表面的三维形态进行重构测量,包括双目视觉系统的硬件配置、操作流程、图像后处理算法等。通过3个具体实验的实例验证了该系统的可行性,具体包括孤立波爬高破碎、结构物兴波破碎以及回转体通气空泡。结果表明,双目视觉技术在实验室尺度下能够实现高精度的气液界面三维重构,有效捕捉复杂的界面形态,为气液两相自由表面流动实验提供可靠的测量与分析技术。The study of gas-liquid two-phase free surface flow is of great significance in both natural phenomena and engineering applications.This paper focuses on the application of binocular vision technology for three-dimensional reconstruction and measurement of gas-liquid two-phase surfaces.The hardware configuration,operation process,image post-processing algorithms,and key considerations of the binocular vision system are described in detail.The effectiveness of the system is verified through three specific experimental cases:solitary wave running-up and breaking,wave breaking induced by structures,and ventilated cavity around an axisymmetric slender body.The results show that the binocular vision technology can achieve high-precision three-dimensional reconstruction of gas-liquid interfaces at the laboratory scale,effectively capturing complex interface configuration.This provides reliable measuring approach for experiments in gas-liquid two-phase free surface flows.

关 键 词：气液两相 自由表面 三维形态 双目视觉 物理实验 

分 类 号：O353.5[理学—流体力学]