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Experiment, acoustic model for the self-oscillation of coaxial swirl injector and its influence to combustion of liquid rocket engine
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作者 HUANG Yuhui ZHOU Jin +1 位作者 HU Xiaoping WANG Zhenguo (Dept. of Aerospace Technology, National University of Defense Technology Hunan Changsha 410073) 《Chinese Journal of Acoustics》 1998年第2期163-170,共8页
During the experiment of gas/liquid coaxial swirl injector conducted with air and water under atmosphere environment, it is observed that the injector may selfoscillate. The self oscillation periodically occurs and va... During the experiment of gas/liquid coaxial swirl injector conducted with air and water under atmosphere environment, it is observed that the injector may selfoscillate. The self oscillation periodically occurs and vanishes with the increasing velocity of the gas flow.A theoretical model is presented based on the experiment investigation. Simulation of the acoustic process has been performed and conclusions consistent with the experiment can be drawn from the theoretical model, which explains the exPeriment phenomena quite well. At last, the comparison between phenomena of the self oscillation and some experiments of LRE indicates that some instability phenomena in oxygen/hydrogen propellant rocket engine may be the related to self oscillation in coaxial injectors 展开更多
关键词 EXPERIMENT acoustic model for the self-oscillation of coaxial swirl injector and its influence to combustion of liquid rocket engine
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