用于高速流场测量的光纤集成气动三孔矢量探头。

Fiber-optic integrated aerodynamic three-hole vector probe for high-velocity flow field measurement.

作者信息

Liu Yueying, Jing Zhenguo, Liu Qiang, Li Ang, Li Wenwen, Zhang Sen, Lee Ang, Tian Fu, Li Rui, Peng Wei

机构信息

School of Optoelectronic Engineering and Instrumentation Science, Dalian University of Technology, Dalian 116024, China.

School of Physics, Dalian University of Technology, Dalian 116024, China.

出版信息

iScience. 2022 May 13;25(6):104402. doi: 10.1016/j.isci.2022.104402. eCollection 2022 Jun 17.

DOI:10.1016/j.isci.2022.104402

PMID:35633936

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9136669/

Abstract

An integrated aerodynamic three-hole pressure probe (THP) based on a fiber-optic tip sensor array for high-velocity flow field vector measurement is developed and demonstrated in wind tunnel testing. The sensor array consisting of three miniature pressure fiber-tip sensors is integrated into three pressure conduits inside top area of the THP, which serves to mitigate pneumatic pressure loss and is expected for a more reliable analysis of flow characteristics. Fast real-time data acquisition is implemented by a compact self-developed multichannel white light interferometry (WLI) interrogator. Well-calibrated maps of the fiber-optic THP are developed in a subsonic free-jet wind tunnel to derive the velocity vectors in a yaw angular range of ±15° at Mach numbers of 0.2 Ma (∼70 m/s), 0.5 Ma (∼170 m/s), and 0.8 Ma (∼300 m/s) while related flow characteristics are analyzed. This work is desired to provide a potential candidate for turbomachinery experimental investigation in fluid mechanics community.

摘要

基于光纤尖端传感器阵列的集成式气动三孔压力探头（THP）被开发出来，并在风洞试验中进行了高速流场矢量测量的演示。由三个微型压力光纤尖端传感器组成的传感器阵列被集成到THP顶部区域内的三个压力管道中，这有助于减轻气动压力损失，并有望对流动特性进行更可靠的分析。通过一个紧凑的自行开发的多通道白光干涉仪（WLI）询问器实现了快速实时数据采集。在亚音速自由射流风洞中绘制了经过良好校准的光纤THP图谱，以在马赫数为0.2 Ma（约70 m/s）、0.5 Ma（约170 m/s）和0.8 Ma（约300 m/s）时，在±15°的偏航角范围内导出速度矢量，同时分析相关的流动特性。这项工作有望为流体力学领域的涡轮机械实验研究提供一个潜在的候选方案。