Development of Pressure Sensitive Paint (PSP) for Low Speed Wind Tunnel Testing

该项目旨在扩大压力测量技术--压敏涂料(PSP)在低速风洞设施中的使用范围。目前，由于缺乏可用的硬件，测量方法发生了变化，对低速测量的影响还没有得到很好的理解。本项目的目的是了解这些限制，调查缓解这些限制的方法，并提供可以取得其他成果的领域。项目内的具体任务是：-统计调查整个不确定性源预算，以突出调查领域-实施精确和准确的校准室，以基准方法并产生性能预期-在UOM风洞设施中实施PSP测试，以展示预期性能-开发PSP实施战略和技术(定制照明和摄像系统)，并与行业标准进行比较-在没有压力接头的情况下探索和确定更便宜的风洞模型设计-利用风洞表面压力数据简化CFD和FEA结果的验证新研究领域包括：-开发利用数字限制PSP结果的模型运动和振动的方法用图像相关技术现场绘制地表压力图--研制微型双脉冲，使用机器视觉摄像机的相机间PSP测量系统适用于在具有挑战性的环境中进行野猪测量-研究在3D打印机材料中嵌入光活性PSP化学物质以实现全仪器风洞模型的快速原型的可能性

This project will aim to extend the useable range of the pressure measurement technique, Pressure-Sensitive Paint (PSP), in low-speed wind tunnel facilities. There is currently a shift in measurement approach due to the lack of availability of hardware and the implications for measurements at low speeds are not well understood. This project will aim to understand those limitations and investigate ways to mitigate them and provide areas where other gains could be made.In order to achieve the above aims, specific tasks within the project are:- Statistically investigate a full uncertainty source budget to highlight areas for investigation- Implement a precise and accurate calibration chamber to benchmark approaches and produce expectations of performance- Implement PSP tests in UoM wind tunnel facilities to demonstrate expected performance- Develop PSP implementation strategies and technologies (bespoke lighting and camera systems) and compare to industry standard- Explore and identify cheaper wind-tunnel model designs in the absence of pressure taps- Streamline the validation of CFD and FEA results with wind-tunnel surface pressure dataNovel areas of investigation are:- developing methods of limiting model motion and vibration on PSP results by utilizing digital image correlation to map surface pressure in-situ- developing a miniature two-pulse, inter-camera PSP measurement system using machine vision cameras applicable to on-boar measurements in challenging environments- investigating the possibility of embedding photoactive PSP chemicals in 3D printer material to enable rapid prototyping of fully instrumented wind tunnel models