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標題:Investigations of Sound Generation by Simulated Solid Rocket Premixed Flames
學年81
學期2
發表日期1993/03/15
作品名稱Investigations of Sound Generation by Simulated Solid Rocket Premixed Flames
作品名稱(其他語言)固體火箭預混火焰誘導聲波振盪之研究
著者陳增源; Chen, Tseng-Yuan; 李新成; Lee, Hsin-Cherng
作品所屬單位淡江大學航空太空工程學系
出版者
會議名稱中華民國第三屆燃燒科技應用研討會=The Third National Conference on Combustion Science and Technology
會議地點臺北市, 臺灣
摘要此研究是描述預混火焰聲波振盪之情況以 探討固體火箭燃燒不穩定之問題。探討主題為 火焰之輻射量測及火焰所激發之聲波振盪。研 究結果發現,在某些當量比之下,會產生週期性 的火焰輻射及壓力振盪;且火焰以多頻振盪,其振盪的主頻率與壓力振盪的主頻率可能不同。 火焰輻射之振盪頻率隨當量比之減少而減低, 同時,聲波場之存在並不影響火焰之振盪。火 焰激發之聲波振盪會因振盪頻率不同而產生加 強或減弱之現象。當聲波振盪之頻率與實驗長 管之自然頻率接近時,有加強聲波場之現象;反 之,則聲波振盪會被減弱。
This research is concerned with the study of sound generation by simulated solid rocket premixed flames located on the sidewall of a long rectangular duct. Specifically, the flame radiation, i.e., light emission, of the flame and the induced acoustic oscillation were investigated. These studies reveal that the self-excited oscillatory flame radiation and the induced pressure oscillation were observed only at certain equivalence ratios. In addition, the flame oscillates with several frequencies and the dominating frequency can be different from that of the induced pressure oscillations. The frequencies of the flame oscillation decreased as the equivalence ratio decreased, and were not affected by the presence of acoustic wave. However, the acoustic oscillations could be enhanced or damped by the flame oscillation depending on the frequency of the oscillations. Driving of acoustic wave occurred when the frequencies of the induced acoustic wave are close to the harmonics of the experimental duct. On the other hand, the acoustic oscillations were damped when the frequencies of the pressure oscillations are away from the harmonics of the duct.;This research is concerned with the study of sound generation by simulated solid rocket premixed flames located on the sidewall of a long rectangular duct. Specifically, the flame radiation, i.e., light emission, of the flame and the induced acoustic oscillation were investigated. These studies reveal that the self-excited oscillatory flame radiation and the induced pressure oscillation were observed only at certain equivalence ratios. In addition, the flame oscillates with several frequencies and the dominating frequency can be different from that of the induced pressure oscillations. The frequencies of the flame oscillation decreased as the equivalence ratio decreased, and were not affected by the presence of acoustic wave. However, the acoustic oscillations could be enhanced or damped by the flame oscillation depending on the frequency of the oscillations. Driving of acoustic wave occurred when the frequencies of the induced acoustic wave are close to the harmonics of the experimental duct. On the other hand, the acoustic oscillations were damped when the frequencies of the pressure oscillations are away from the harmonics of the duct.
關鍵字固體火箭;預混火焰;火焰輻射;聲波振盪;當量比;頻率;燃燒不穩定;Solid Rocket;Premixed Flame;Flame Radiation;Acoustic Oscillation;Equivalence Ratio;Frequency;Combustion Instability
語言英文
收錄於
會議性質國內
校內研討會地點
研討會時間19930315~19930316
通訊作者行政院國家科學委員會工程科技推展中心; 教育部; 行政院環境保護署
國別中華民國
公開徵稿Y
出版型式
出處中華民國第三屆燃燒科技應用研討會論文集=Proceedings of the Third National Conference on Combustion Science and T echnology, pp.73-78
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