查詢結果分析
來源資料
相關文獻
- Ignition and Transition to Flame Spread Over a Vertically Thin Solid Fuel
- The Study of Ignition and Flame Spread Over a Thick Solid Fuel in a Forced Convective Environment
- A Numerical Analysis of Flame Spread Over a Thin Fuel Inclined from Vertically Downward to Horizontal
- Theoretical Ignition Criterion for Totally Non-Premixed Jet Flames
- 傳火管內壓力波、溫度及孔隙度分析
- 氫對預混合氣體燃料之燃燒特性影響
- Flame Propagation in a Rotating Tube
- Asymptotic Analysis of Thermal Ignition in Combustible Boundary-Layer Flows Induced by a Vertical Hot Plate
- Evaluation of Flammability of Lignocellulosic Materials and Synthetic Polymers by TGA
- Ignition of Natural Convection of Flat Plates in a Strongly Catalytic Limit
頁籤選單縮合
題 名 | Ignition and Transition to Flame Spread Over a Vertically Thin Solid Fuel=垂直薄型固體燃料之引燃及過渡至火焰傳播 |
---|---|
作 者 | 林宗賢; | 書刊名 | 南臺科技大學學報 |
卷 期 | 26 2002.03[民91.03] |
頁 次 | 頁89-96 |
分類號 | 446.4 |
關鍵詞 | 引燃; 火焰傳播; 薄型固體燃料; Lgnition; Flame spread; Thin solid fuel; |
語 文 | 英文(English) |
中文摘要 | 本文以數值方法研究在正常重力場中,靜止空氣環境下,垂直放置的薄型固體燃料,受外界輻射熱源加熱而自發性引燃的過程。研究中,外界空氣含氧質量分量由35%向下變化到非引燃界限。研究發現,在非引燃情況時,由於氣相最高溫度和最高反應速率過低因而不能啟動燃燒反應。外界合氧濃度人於17%燃料皆可引燃及過渡至火燄傳播。低外界含氧濃度比高外界含氧濃度在引燃瞬間行較大的引燃火燄。在過渡期間,火燄成長速率比純逆向火燄或純順向火燄傳播快。雖然高外界含氧濃度的引燃火燄較小,但過渡後變成比低外界含氧濃度強之火燄。在過渡期間,火燄成長速率隨含氧濃度增加而增快。 |
英文摘要 | A numerical study on the spontaneous ignition process of a vertically placed solid thin fuel heated by external radiation in normal gravity, quiescent environment was made. The ambient oxygen mass fraction is varied from 35 % down to the non-ignition limit. It was found that in the non-ignition case, the maximum reaction rate and maximum temperature in gas-phase were too weak to onset the combustion reaction. For the ambient oxygen concentration greater than 17 % the ignition and transition to flame spread all are achievable. The low ambient oxygen concentration has larger and stronger ignited flame than the high ambient oxygen concentration at the instant of ignition occurs. The flame grows rate was found faster than the purely opposed and purely concurrent spread flames. Although it has smaller ignited flame, the propagating flame in high ambient oxygen concentration becomes longer and stronger in structure than the low oxygen flame. The results reveal that, the flame grows rate in transition increase with the increasing in ambient oxygen concentration. |
本系統中英文摘要資訊取自各篇刊載內容。