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基于光流法的气流场测量研究

267    2020-04-27

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作者:苏轼鹏1, 翟玉婷2, 金良安1

作者单位:1. 海军大连舰艇学院航海系, 辽宁 大连 116018;
2. 海军大连舰艇学院信息系统系, 辽宁 大连 116018


关键词:光流法;蒲公英种子;光流矢量图;轨迹线


摘要:

气流场的测量是许多研究领域的难点问题,其中的核心问题是示踪粒子的选取。该文从适应业务工程需求的角度出发,着眼于气流场测量的难点问题,基于光流法原理,采用蒲公英种子为示踪粒子,开展气流场测量的实验研究。实验研究中以小型风洞的气流场作为研究对象,利用高速摄像机连续拍摄粒子运动,再采用光流法计算粒子的轨迹、方向和速度,以此反映气流场的情况。结果表明:基于光流法并结合蒲公英种子作为示踪粒子的气流场测量方法是一种有效的新型测量方法,蒲公英种子的随流性较好,能够真实反映出气流场的特征,可进一步开发推广应用于各研究领域的气流场的测量。


Research on measurement of airflow field based on optical flow
SU Shipeng1, ZHAI Yuting2, JIN Liang'an1
1. The Department of Navigation, Dalian Naval Academy, Dalian 116018, China;
2. The Department of Information System, Dalian Naval Academy, Dalian 116018, China
Abstract: Measurement of airflow field is a difficult point for many research field., the center question is how to choose tracer particles. According to the difficult problems of airflow field's measurement and the requirement of engineering, the research based on optical flow theory is carried out, and dandelion seeds are used as tracer particles. Object of study is airflow field in a small scale wind tunnel, particles motion is recorded by high speed camera, and then, track, direction and velocity of tracer particles are calculated base on optical flow, the motion of tracer particles can show airflow fields. The conclusion show that it is a efficacious and new measuring method, dandelion seeds fluidity is good, it can show the true character of air flowm it can be exploited to measurement of airflow field.
Keywords: optical flow;dandelion seeds;optical flow veoctor chart;track line
2020, 46(4):6-11  收稿日期: 2019-03-01;收到修改稿日期: 2019-06-06
基金项目: 国家自然科学基金青年基金(51809272)
作者简介: 苏轼鹏(1980-),男,吉林敦化市人,讲师,博士,研究方向为军事航海安全及防护技术
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