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

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

doi:10.1016/j.isci.2022.104402

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

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

Authors

Yueying Liu¹, Zhenguo Jing², Qiang Liu², Ang Li¹, Wenwen Li³, Sen Zhang¹, Ang Lee², Fu Tian³, Rui Li², Wei Peng²

Affiliations

¹ School of Optoelectronic Engineering and Instrumentation Science, Dalian University of Technology, Dalian 116024, China.
² School of Physics, Dalian University of Technology, Dalian 116024, China.
³ School of Energy and Power Engineering, Dalian University of Technology, Dalian 116024, China.

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.

Keywords: Fiber optics; Nanotechnology; Physics.