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研究生:徐睦淵
研究生(外文):Hsu, Mu-Yuan
論文名稱:以紋影技術探討居室開口位置對火場中性面之影響
論文名稱(外文):The Impact of Opening Positions on the Neutral Plane in Compartment Fires by the Schlieren Photography
指導教授:陳永隆陳永隆引用關係蘇崇輝蘇崇輝引用關係
指導教授(外文):Chen, Yung-LungSu, Chung-Hwei
口試委員:陳耀漢陳永隆蘇崇輝
口試委員(外文):Chen, Yao-HanChen, Yung-LungSu, Chung-Hwei
口試日期:2015-01-29
學位類別:碩士
校院名稱:吳鳳科技大學
系所名稱:消防研究所
學門:軍警國防安全學門
學類:警政學類
論文種類:學術論文
論文出版年:2015
畢業學年度:103
語文別:中文
論文頁數:56
中文關鍵詞:火災紋影技術中性面模型實驗
外文關鍵詞:FireSchlieren Photographyneutral planescale model experiment
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火場中熱對流對火災成長、人員安全逃生具有很有大的影響。其
中又以空間開口位置影響中性帶位置影響甚大。本研究利用小型模型, 觀察模型空間中不同開口位置對中性帶的高低與空間內部溫度變化, 透過紋影法即熱電藕搭配其量測數據分析。
開口位置在火源正上方其效果最好(開口2),其次是接近逃生口 (開口1),最後是離逃生口最遠(開口3)。以第二實驗案例比對,上方 開口與側面開口,透過紋影攝影位置不同對於中性帶高低亦有差別其 直上開口亦比側面開口,所產生的中性帶較高。
The phenomenon of thermal convection in fires is a significant impact on fire growth and people evacuation. The spatial position of the openings will influence the heights of neutral planes. In this study, a scale model with three openings on different level was conducted. In this study, schlieren photograph method and thermocouple measurement data were acquired. The temperatures of the openings in different heights on the neutral positions were observed in models.
The results showed that best effect on heat dissipation was opening located directly above the fire source. The closer the opening located, the better the effect was. The worst effect was opening furthest away from the fire. There are significant differences on the height of neutral planes with different opening positions by Schlieren photography technology. The results also showed that the neutral planes are higher when the opening directly above the fire source relative to the side opening.
誌謝 ................................................................ I
中文摘要 ........................................................... II
ABSTRACT .......................................................... III
表目錄 ............................................................. VI
圖目錄 ............................................................ VII
第一章 緒論 ......................................................... 1
1.1 研究動機 ..................................................... 1
1.2 文獻回顧 ..................................................... 3
1.2.1纹影法的應用 ...............................................3
1.2.2縮小模型 ...................................................5
1.2.3數值模擬與中性面探討 .......................................5
1.3 研究方法與研究架構 ............................................. 7
第二章 理論分析 ..................................................... 8
2.1火與煙的特性 ...................................................8
2.1.1 火源成長理論...............................................8
2.2 煙囪效應 ...................................................... 11
2.2.1 中性面理論[23]............................................11
2.3 縮小尺度模型理論 .............................................. 14
2.3.1 模型研究及相似定理[24]....................................15
2.3.2 物理模型理論[25]..........................................18
2.4 紋影攝影術 .................................................... 25
2.4.1 紋影法介紹 ................................................ 25
2.5 光學性質分析[28] .............................................. 27
第三章 實驗設備及實驗方法 .......................................... 30
3.1 紋影法設備解說 ................................................ 30
3.1.1 實驗設備介紹..............................................31
3.2實驗方法 ......................................................36
3.2.1 模型製作..................................................36
3.2.2 實驗空間說明..............................................37
3.2.3單面凹面鏡紋影法(single-mirror setup) .....................39
3.2.4雙面凹面鏡紋影法(Z-Type setup): ...........................41
第四章 結果與討論 .................................................. 43
4.1 模型實驗結果..................................................43
第五章 結論與建議 .................................................. 51
5.1結論 ..........................................................51
5.2建議 ..........................................................52
參考文獻 ........................................................... 53
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