Development of Fast and Highly Accurate Surface Pressure Measurement System with Pressure Sensitive Paints

压敏涂料快速高精度表面压力测量系统的开发

• 批准号: 12555047
• 负责人: MASUDA Mitsuharu
• 金额: $ 8.45万
• 依托单位: KYUSHU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-12555047/
• 关键词: PRESSURE SENSITIVE PAINTS; PSP; PRESSURE MEASUREMENTS

Pressure sensitive paints (PSPs) are a kind of a functional paint. Recently, pressure measurement technique based on these paints is being developed and used for aerodynamic applications. This approach uses the luminescent molecules that emit light whose intensity increases with the decrease in partial pressure of oxygen. This coating can give the surface pressure data with high spacial resolution in the windtunnel testing. In this work, the time-response and the effect of temperature of the PSPs, which were important characteristics in measuring pressure, were obtained experimentally. The PSPs studied in the present works were PtOEP , PtTFPP, H_2TFPP, and H_2TCPP; they were painted on a porous silica thin-layer chromatography (TLC) plate. The following results were obtained.(1) The emission spectrum of each PSP was measured. The luminescence intensity data in various range of temperature and pressure were accumulated experimentally for each PSP.(2) The luminescence intensity of a PSP decreases during irradiation due to photodegradation. This phenomenon was measured for each PSP, and the time constant representing the degree of degradation was estimated.(3) The time-response of the paints was investigated by using a shock tube. Results indicated that the response time was on the order of 20-40 microseconds.(4) The effect of the sudden change in gas temperature on the luminescence intensity was investigated by using the contact surface of the shock tube flow, and it was found that the luminescence intensity depended only on the wall temperature and was affected little by the gas temperature.

压敏涂料是一种功能性涂料。最近，基于这些涂料的压力测量技术正在开发中，并用于空气动力学应用。这种方法使用发光分子，其发光强度随着氧分压的降低而增加。在风洞试验中，该涂层可提供高空间分辨率的表面压力数据。本文通过实验研究了压力传感器的时间响应特性和温度效应。本文研究的PSP为PtOEP、PtTFPP、H_2TFPP和H_2TCPP，它们被涂在多孔硅胶薄层色谱板上。获得了以下结果。(1)测量了每个PSP的发射光谱。实验中积累了每个PSP在不同温度和压力范围内的发光强度数据。(2)由于光降解，PSP的发光强度在照射期间降低。对每个PSP测量这种现象，并估计代表降解程度的时间常数。(3)用激波管研究了涂料的时间响应。结果表明，响应时间在20-40微秒的数量级。(4)利用激波管流动的接触面研究了气体温度突变对发光强度的影响，发现发光强度只取决于壁面温度，受气体温度的影响很小。

项目成果

片野田洋: "適正膨張超音速噴流中に置かれた円柱まわりの流れ"日本機械学会論文集 B編. 67・663. 2687-2692 (2001)

Hiroshi Katanoda：“放置在适当膨胀的超音速喷气机中的圆柱体的流动”，日本机械工程师学会汇刊，B 版 67・663（2001 年）。

T.Handa: "Formation of multiple shocklets in a transonic diffuser flow"Shock Waves. 11・6. 423-430 (2002)

T.Handa：“跨音速扩散流中的多个激波的形成”冲击波11・6（2002）。

權眞卿: "先細ダクトを通る二つの亜音速流れの合流による複合チョーク"日本機械学会論文集 B編. 68・675. 2960-2967 (2002)

秦进：“通过锥形管道合并两个亚音速流而产生的复合扼流圈”，日本机械工程师学会会刊，B 版 68・675（2002 年）。

H.Katanoda: "Effect of Reynolds number on Pitot-pressure distributions in underexpanded supersonic freejets"J.Propulsion and Power. 17・4. 940-942 (2001)

H.Katanoda：“雷诺数对欠膨胀超音速自由喷气机中皮托压力分布的影响”J.Propulsion and Power 17・4（2001）。

半田太郎: "感圧塗料の温度依存性の評価"可視化情報. 21・2. 303-306 (2001)

半田太郎：“压敏涂料的温度依赖性评价”可视化信息21・2（2001）。