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研究生:林雋堯
研究生(外文):Chun-Yao Lin
論文名稱:應用溫度感測微粒於熱渦環之流場與溫度場可視化
論文名稱(外文):Flow and Temperature Visualization of a Heated Vortex Ring Using Temperature Sensitive Particle
指導教授:田維欣
指導教授(外文):Wei-Hsin Tien
口試委員:黃智永林怡均溫琮毅
口試委員(外文):Chih-Yun HuangYi-Jiun LINTsrong-Yi Wen
口試日期:2017-07-21
學位類別:碩士
校院名稱:國立臺灣科技大學
系所名稱:機械工程系
學門:工程學門
學類:機械工程學類
論文種類:學術論文
論文出版年:2017
畢業學年度:105
語文別:中文
論文頁數:98
中文關鍵詞:溫度感測塗料流場可視化
外文關鍵詞:Temperature Sensitive PaintFlow Visualization
相關次數:
  • 被引用被引用:1
  • 點閱點閱:329
  • 評分評分:
  • 下載下載:23
  • 收藏至我的研究室書目清單書目收藏:0
本研究研發一創新之流場與溫度場可視化技術,並將其應用於水箱中之加熱後渦環之溫度場量測及流場可視化,為溫度感測塗料(Temperature Sensitive Paint)技術與流場可視化(Flow Visualization)技術之組合與延伸應用。與其它直接使用結晶狀微粒之溫度量測技術不同,本研究以加熱攪拌製程將可用於微粒影像測速法(Particle Image Velocimetry)之五微米循跡微粒外層包覆一層螢光材料(EuTTA, Europium (III) thenoyltrifluoroacetonate, trihydrate)之塗層使其有溫度感測能力,並以電子顯微鏡觀察其塗層情形。製成之螢光溫感微粒之激發與放射光譜將由光譜儀量測並紀錄其溫度對應螢光強度之關係,製作出其溫度校正曲線。為求驗證溫感微粒之性能,將此溫感微粒溶液以初始溫度分別為攝氏23度(未加熱)與70度(加熱)置入針筒並以之注入一裝有攝氏23度冷水之水箱內以形成渦環(vortex ring),並利用405nm之雷射光頁做為激發光源,將其619nm之放射光訊號以sCMOS攝影機截取並紀錄分析。實驗的結果顯示出渦環之流場結構能清楚的被觀察到,且不同溫度下觀測到的渦環光強度會因為溫度差異而有4.5倍的亮度差別,若是使用適當的激發光源與校正方法,此技術有潛力成為一量化工具同時量測流場中流體之速度與溫度分布。
A whole-field flow and temperature measurement technique is proposed in this study to visualize the temperature and flow distribution of a heated vortex ring. This technique is a combination and extension of Temperature Sensitive Paint (TSP) and Flow Visualization (FV). 5μm tracer particles are coated with EuTTA (Europium (III) thenoyltrifluoroacetonate, trihydrate) through a heating and stirring process to be fluorescent and temperature sensitive (TS). Unlike other researches using crystalline thermal phosphor as tracing particles, the particles proposed in this study is in spherical shape. The emission spectrum of EuTTA and the temperature response curve is verified by a spectrometer. To validate the performance of the temperature sensitive particles, TS-particles are seeded in DI water and injected into a cold water tank at 23℃ from a syringe to create a heated (70℃) and unheated (23℃) vortex ring. Through a 405nm excitation laser source, the 619nm emission luminescence signal is captured and recorded by a sCMOS camera. The experimental results show that the vortex ring structures is visualized successfully and light intensities of the heated vortex ring image is 4.5 times larger than the unheated one because of the temperature differences. With appropriate illumination and calibration, this technique can be applied to quantitatively measure the velocity and temperature fields of the flow.
第 1 章 緒論
第 2 章 實驗方法
第 3 章 結果與討論
第 4 章 結論與未來建議
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