頁籤選單縮合
題 名 | Investigations of Thermo-Acoustic Instabilities by Direct Acoustic Admittance Measurements |
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作 者 | Chen,Tzeng-yuan; Chen,Man-ge; | 書刊名 | The Chinese Journal of Mechanics |
卷 期 | 16:3 2000.09[民89.09] |
頁 次 | 頁133-136 |
分類號 | 348.4 |
關鍵詞 | Laminar premixed flame; Acoustic admittance; Combustion instability; |
語 文 | 英文(English) |
英文摘要 | This research applied the method of direct acoustic admittance measurement to investigate effects of the flame character and the burner acoustic admittance on the flame-driving behavior. The acoustic admittance data were obtained by directly measuring the amplitudes of pressure and velocity oscillations, and the phase relations between the pressure and velocity oscillations. Results of this research reveal that the flame-driving characteristic is mainly dominated by the nonreactive burner admittance not the flame. Whether the flame is to drive or damp the acoustic field is determined by the acoustic admittance of the burner system. The flame equivalence ratio plays a role mainly in determining the magnitude of the flame driving/damping. |
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