Development of quantitative visualization method of temperature and velocity field in micro scale applicable to all working fluids

2023 Fiscal Year Final Research Report

• Project/Area Number: 21K14077
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 19010:Fluid engineering-related
• Research Institution: Chuo University (2023); Aoyama Gakuin University (2021-2022)
• Principal Investigator: Ishii Keiko 中央大学, 理工学部, 准教授 (80803527)
• Project Period (FY): 2021-04-01 – 2024-03-31
• Keywords: 流れの可視化 / 熱工学 / 光学計測 / 流体工学

Outline of Final Research Achievements

This study aims to establish a technique for accurately measuring the temperature and velocity fields of fluids within energy equipment. It developed a method using high-brightness temperature-sensitive micro-particles for simultaneous 3D temperature and velocity measurements. Initially, bi-color fluorescent particles were synthesized for use in transient and multiphase fields, leveraging changes in emission spectrum intensity with temperature changes. Last year, the potential for simultaneous measurements in transient fields was demonstrated using RGB cameras to capture emission intensity distributions. This year's results confirmed a temperature sensitivity of 1% per 1°C, with necessary calibrations performed based on location. This research is applicable to the analysis of opaque fluids and complex flows and is expected to be broadly useful in engineering fields.

Free Research Field

流体工学

Academic Significance and Societal Importance of the Research Achievements

本研究は、エネルギー機器内の流体の温度速度場を精密に計測する新技術を開発し、エネルギー効率の向上に貢献する。高輝度感温微小粒子を用いた三次元同時計測手法により、不透明流体や複雑な流れの解析が可能となる。この技術はエネルギー消費削減及び環境負荷低減に寄与し、工学分野での広範な応用が期待される。これにより、学術的及び社会的意義が極めて高い。