激光与光电子学进展, 2018, 55 (11): 111102, 网络出版: 2019-08-14  

透射式纹影摄影成像灵敏度分析 下载: 1107次

Sensitivity Investigation of Schlieren Imaging System
作者单位
哈尔滨理工大学理学院, 黑龙江 哈尔滨 150000
摘要
在流体密度测量中,纹影设备的灵敏度是实验测量结果的关键。为了研究空气流速、温度以及装置参数对实验的影响,设计了以热风枪为扰动区的灵敏度测量系统。通过成像分析,给出了不同温度和不同空气密度下的像面图。发现纹影系统的灵敏度可以由像面上热风枪的温度变化(像面条纹数)来衡量,即系统的纹影设备灵敏度越高,可分辨的热风枪扰动后成像面中得到的条纹数越多,能够分辨的温度区间越大。利用Zemax进行模拟验证,实验结果和理论分析基本一致。结果表明,热风枪扰动法可以便捷、有效地衡量透射式纹影设备的灵敏度,为纹影系统灵敏度的测量提供了一种简洁有效的方法。
Abstract
The sensitivity of schlieren equipment is the key issue of the experimental results in the density measurements of fluid. A sensitivity measuring system was designed, taking a hot air gun as the disturbing region. The effect of flow velocities, temperatures of the hot air, and equipment parameters on the sensitivity of the system was investigated. The images were obtained under various temperatures and air densities. The sensitivity of the schlieren system could be characterized by the temperature variation, so called fringe number on the image. The more obtained fringe number of the image in the hot air gun disturbed schlieren imaging system, the higher sensitivity and the wider range of temperature variation. The optical paths of the schlieren imaging system were simulated by Zemax, and the experimental results agree with the theoretical analysis. The results show that the hot air disturbing method could characterize the sensitivity of schlieren equipment effectively, which provides a convenient and sensitive approach for sensitivity measurement of the schlieren system.

王文悦, 董睿歌, 杨文龙. 透射式纹影摄影成像灵敏度分析[J]. 激光与光电子学进展, 2018, 55(11): 111102. Wenyue Wang, Ruige Dong, Wenlong Yang. Sensitivity Investigation of Schlieren Imaging System[J]. Laser & Optoelectronics Progress, 2018, 55(11): 111102.

引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!