| 摘要: |
| 研究了水平安置燃烧柴油的改型瑞克管脉动燃烧器的燃烧特性。利用风机，使管内气流稳定流动，组合使用双旋流器和扩焰盘形成起始火焰并保证最大放热脉动在离进口四分之一处。试验表明，采取以上措施，改型瑞克管可以激发脉动燃烧，压力脉动频率在１００Ｈｚ～１１０Ｈｚ，最大压力脉动的幅值约为３．８ｋＰａ，燃烧效率接近１００％。还研究了管内稳定流速、旋流器和扩焰盘的轴向位置等对脉动燃烧的影响。发现在一定稳定流速的范围内，可以激发脉动燃烧，旋流器过分靠近进口和扩焰盘偏离进口四分之一处都会使压力脉动幅值降低和工作范围变窄 |
| 关键词: 燃烧器 燃烧性能 脉动压力 性能试验 燃烧学 |
| DOI： |
| 分类号:V228.1 |
| 基金项目: |
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| EXPERIMENTAL RESEARCH ON PULSATING COMBUSTION FOR IMPROVED RIJKE COMBUSTOR |
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Wang Chuanfa, Wang Jiahua, Tao Lei, Zhang Donghui
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Dept.of Power Engineering,Nanjing Univ.of Aeronautics and Astronautics,Nanjing,210016
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| Abstract: |
| The combustion characteristics of an improved Rijke tube pulsating combustor burning diesel oil were studied.Different to most traditional pulsating combustors,the new combustor consisted of a level tube opened at both ends with a fan which supplies a constant speed gas flow,a co axial double swirling and an expanding flame disc.By applying these sets,this combustor can easily excite the pulsating combustion.The frequency and the most amplitude of pulsating pressure were 100 Hz￣110 Hz,3 8 kPa.The combustion efficiency was near 100%.The influence of the velocity of gas flow,the position of a co axial double swirling and an expanding flame disc on pulsating combustion were also studied |
| Key words: Burner Combustion performance Fluctuating pressure Performance test Combustion theory |
