Simultaneous surface pressure and velocity field measurements with PSP and PIV/PTV in the Transonic Windtunnel Munich to quantify and minimize interference effects

在慕尼黑跨音速风洞中使用 PSP 和 PIV/PTV 进行同步表面压力和速度场测量，以量化并最大程度地减少干扰影响

• 批准号: 405970257
• 负责人: Professor Dr. Christian Joachim Kähler
• 金额: --
• 依托单位: Institut für Strömungsmechanik und Aerodynamik (LRT-7)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2018
• 资助国家: 德国
• 起止时间: 2017-12-31 至 2022-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/405970257?language=en
• 关键词: Simultaneous; surface; pressure; velocity; field

Simultaneous measurements using the optical measurement methods pressure sensitive paint (PSP) to determine surface pressure fields and particle image velocimetry (PIV), or particle tracking velocimetry (PTV), to determine velocity fields are a technical challenge that has not been solved, to this day. However, applying both techniques simultaneously would significantly increase their efficiency and much deeper physical insight into the flow processes could be achieved. To reach his goal, the aim of this research project is to systematically quantify and suppress adverse interactions and interferences between both measurement methods. Furthermore, the measurement uncertainty of unsteady pressure sensitive paints will be reduced significantly within the project. This enables the simultaneous application of the measurement techniques to investigate unsteady flow phenomena and the improvement of novel measurement methods, such as pressure from PIV. The results will be utilized to investigate various fluid mechanical problems in the Trisonic Windtunnel Munich with high spatial and temporal resolution. The results will show under with conditions simultaneous PSP and 3D-PTV measurements are possible and also the measurement uncertainty will be quantified.

使用光学测量方法压敏涂料(PSP)确定表面压力场和粒子图像测速仪(PIV)或粒子跟踪测速仪(PTV)同时测量速度场是至今尚未解决的技术挑战。然而，同时应用这两种技术将显著提高它们的效率，并可以实现对流动过程的更深层次的物理了解。为了达到他的目标，本研究项目的目的是系统地量化和抑制两种测量方法之间的不利相互作用和干扰。此外，非稳态压敏涂料的测量不确定度将在项目内显著降低。这使得测量技术能够同时应用于研究非定常流动现象和改进新的测量方法，例如来自PIV的压力。这些结果将被用来研究慕尼黑三音速风洞中的各种流体力学问题，并具有高时空分辨率。结果表明，在有条件的情况下，同时进行PSP和3D-PTV测量是可能的，并且测量不确定度将被量化。