Development of Ultrafast Response Pressure-Sensitive Paints forVisualization of Shock Wave Phenomena

开发用于冲击波现象可视化的超快响应压敏涂料

• 批准号: 23760761
• 负责人: NUMATA Daiju
• 金额: $ 2.91万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23760761/
• 关键词: 航空宇宙流体力学; 感圧塗料; 衝撃波; 流体計測; 可視化

The objective of this study is to develop ultrafast-response Pressure-Sensitive Paint (PSP) with the response time less than 1 μs for visualization of shock-wave phenomena. In order to apply PSP to unsteady shock-wave phenomena, Anodized-Aluminum PSP (AA-PSP) with ultrafast response was fabricated and its response time to a step pressure change was evaluated by using a shock tube. To fabricate AA-PSP with ultrafast response, we selected phosphoric acid electrolyte and changed electrolyte temperature in a systematic manner. The improved AA-PSP achieved a response with the time constant of 0.35 μs. This is the fastest PSP ever reported. We applied this AA-PSP to interactions of a moving shock wave with a circular cylinder. The results show that the improved AA-PSP can visualize the shock reflections and the shock diffractions with the ever-highest spatial and temporal resolution.

本研究的目的是开发响应时间小于1 μs的超快速响应压敏涂料（PSP），用于冲击波现象的可视化。为了将PSP应用于非定常激波现象，制备了超快响应的阳极氧化铝PSP (AA-PSP)，并利用激波管评估了其对阶跃压力变化的响应时间。为了制备具有超快响应的AA-PSP，我们选择了磷酸电解质，并系统地改变了电解质温度。改进的AA-PSP的响应时间常数为0.35 μs。这是有史以来最快的PSP。我们将此AA-PSP应用于运动激波与圆柱体的相互作用。结果表明，改进的AA-PSP能够以最高的空间和时间分辨率显示激波反射和激波衍射。

项目成果

APPLICATION OF A POINT‐DIFFRACTION INTERFEROMETER TO UNSTEADY SHOCK WAVE PHENOMENA

点衍射干涉仪在非稳态冲击波现象中的应用

• 发表时间: 2012
• 作者: Daiju Numata;Kiyonobu Ohtani
• 通讯作者: Kiyonobu Ohtani

高速非定常流体現象解明のための超高速応答型感圧塗料の開発

开发超高速响应压敏涂料以阐明高速非稳态流体现象

• 发表时间: 2011
• 作者: 藤井祥太;沼田大樹;永井大樹;浅井圭介
• 通讯作者: 浅井圭介

APPLICATION OF A POINT ‐ DIFFRACTION INTERFEROMETER TO UNSTEADY SHOCK WAVE PHENOMENA

点衍射干涉仪在非稳态激波现象中的应用

• 发表时间: 2012
• 作者: Daiju Numata;Kiyonobu Ohtani
• 通讯作者: Kiyonobu Ohtani

非定常衝撃波現象への適用を目指した超高速応答型感圧塗料の開発

开发用于非稳态冲击波现象的超快响应压敏涂料

• 发表时间: 2012
• 作者: 藤井祥太;沼田大樹;永井大樹;浅井圭介
• 通讯作者: 浅井圭介

Development of Ultrafast-Response Anodized-Aluminum Pressure-Sensitive Paints

• DOI: 10.2514/6.2013-485
• 发表时间: 2013-01
• 作者: Shota Fujii;D. Numata;H. Nagai;K. Asai