火箭推进2023，Vol.49Issue(6)：38-45,8.
同轴离心式单、双喷嘴喷雾特性对比实验
Comparative experimental of spray characteristics for gas liquid coaxial swirl single and double injectors
摘要
Abstract
Presents an experimental study of the spray characteristics of liquid-centred coaxial swirl sin-gle and double injectors.High-speed photography was applied to capture the transient spray process and the corresponding atomization cone angles were obtained by a Matlab program and compared with a single injector.And a laser particle analyzer was used to measure the Sauter mean diameter(SMD)in the near-field region of the dual injectors,which was used to analyze the variation mechanism in the atomization cone angle between the single and dual injectors.The results shows that with the increase of vapor liquid ratio,the atomisation cone angle of the double injectors increases compared to the single injector.The complex turbulence zone formed between the double injectors results in the sauter mean diameter between the injectors being smaller than the outer side of the injector.The smaller particle size between the injec-tors is susceptible to the winding and sucking effect of the turbulence zone,resulting in an increase in the spray cone angle inside the double injectors.关键词
液体中心型/同轴离心式喷嘴/SMD/雾化锥角/双喷嘴Key words
liquid-centered/coaxial swirl injector/SMD/spray angle/double injectors分类
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康金鑫,仝毅恒,高玉超,谢家豪,郭康康,丰松江..同轴离心式单、双喷嘴喷雾特性对比实验[J].火箭推进,2023,49(6):38-45,8.基金项目
国家自然科学基金(12002386) （12002386）
