本研究旨在應用壓力螢光感測塗料(Pressure sensitive paint; PSP)於穿音速流場中凸角流(transonic convex corner flow)全域性壓力量測，並將凸角上游裝有渦流產生器(vortex generator)的壓力量測結果做比對。實驗結果顯示，加裝高度為0.2個邊界層高度的渦流產生器可以延遲邊界層分離發生，而加裝高度為1.0個邊界層高度的渦流產生器會造成寄生阻力(parasitic drag)。
研究中所使用的壓力螢光感測塗料為摻入中空顆粒的PSP(Mesoporous PSP, MP-PSP)，是具有高壓力靈敏度且反應快速的PSP。但由於PSP在壓力量測上會受到溫度影響而生誤差，因此根據相關文獻，自行開發溫度螢光感測塗料(Temperature sensitive paint, TSP)藉由量測凸角流模型全域性溫度分布，以修正PSP所獲得的壓力數據。在PSP動態反應時間量測的部分，本研究會以震波管量測PSP在短暫時間內，對於壓力躍升的反應時間。實驗結果證明PSP反應時間為次毫秒等級，足以應用於幾秒穩態時間的壓力量測。最後，溫度修正後的壓力量測結果與Kulite transducer做比對。研究結果顯示，PSP在凸角流模型幾何中心的壓力量測結果與Kulite transducer的結果吻合。藉由PSP的全域性壓力量測結果，可將Kulite transducer所無法觀測的壓力場現象，例如：渦流行經軌跡造成的低壓帶，以及渦流產生器內側upwash以及外側downwash區域等以全域性壓力分布顯示出來。凸顯PSP在定性、定量以及高空間解析度的壓力場量測優勢。

This study aims to investigate the global pressure distribution of transonic convex corner model by Pressure Sensitive Paint, PSP. The results are compared to the cases with different heights of vortex generator. The results demonstrated that vortex generator with 0.2 height of turbulence boundary layer thickness is the better type to delay the occurrence of separation. On the other hand, the vortex generator with 1.0 height of turbulence boundary layer thickness can cause parasitic drag.
PSP used in this research is mesoporous PSP, MP-PSP, which contains mesoporous particles and has the characteristic of high pressure sensitivity and short response time. The measurement of PSP can be affected by temperature variation. To resolve this problem, temperature sensitive paint, TSP, is developed and applied to the wind tunnel tests. By measuring the global temperature of a model, errors of PSP pressure data resulted from temperature can be corrected. The dynamic response of PSP to pressure rise has been examined in shock tube experiment. The result demonstrates that response time of MP-PSP is in sub-millisecond, which is applicable for steady state wind tunnel measurement in few seconds. The result of temperature-corrected PSP data shows good agreement with Kulite transducer measurement. Kulite transducer cannot get the global pressure distribution and therefore the 2D pressure distribution can only be well demonstrated by PSP. With PSP, the global pressure distribution can illustrate the low-pressure region caused by trace of pair vortices Also, upwash in the inward region and downwash in the outward region of a vortex generator can be well demonstrated in the result of PSP. This shows the advantage of high spatial resolution of PSP measurement.

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