航天推进技术研究院主办
[1]张波涛,王 凯,李 平,等.径向槽布局方式对针栓喷注器雾化角的影响[J].火箭推进,2023,49(06):1-9.
ZHANG Botao,WANG Kai,LI Ping,et al.Effect of radial slots layout on spray angle for gas-liquid pintle injector[J].Journal of Rocket Propulsion,2023,49(06):1-9.
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ZHANG Botao,WANG Kai,LI Ping,et al.Effect of radial slots layout on spray angle for gas-liquid pintle injector[J].Journal of Rocket Propulsion,2023,49(06):1-9.
径向槽布局方式对针栓喷注器雾化角的影响
《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]
卷:
49
期数:
2023年06期
页码:
1-9
栏目:
目次
出版日期:
2023-12-25
- Title:
- Effect of radial slots layout on spray angle for gas-liquid pintle injector
- 文章编号:
- 1672-9374(2023)06-0001-09
- Keywords:
- gas-liquid pintle injector; spray angle; radial slot; blocking rate
- 分类号:
- V434.3
- 文献标志码:
- A
- 摘要:
- 目前针栓喷注器中心推进剂的喷注形式多采用离散的槽型结构,径向槽布局方式对雾场结构起到了决定性的作用。为了获得气液针栓喷注器雾化角的预测公式,基于控制体分析从动量定理推导出了喷注单元的雾化角理论公式,并通过试验结果修正理论公式得到了动量系数。对于多喷注单元针栓喷注器的雾化角,采用试验结果对喷注单元雾化角的理论模型进行修正,掌握了径向槽布局方式和阻塞率对雾化角的影响规律。结果表明:雾化角的理论预估值与试验值吻合较好; 在总流通面积和质量流量一定时,径向槽布局方式对雾化角影响很小; 局部动量比和阻塞率对雾化角起决定性作用,当阻塞率不大于14.55时,相邻喷注单元之间的相互作用影响很小,多喷注单元气液针栓喷注器的雾化角与喷注单元的雾化角近似,当阻塞率不小于25.46时,雾化角理论公式中的动量系数推荐值为0.87。
- Abstract:
- In present, the injection form of the center propellant in pintle injector is mostly discrete slot, and radial slots layout plays a decisive role in the spray structure. In order to obtain the spray angle formula of gas-liquid pintle injectors, a spray angle prediction formula of injector unit was deduced from the momentum conservation based on the control volume. The momentum coefficient was derived from the experimental results to modify the theoretical formula. For the spray angle of pintle multi-injectors, the experimental results were used to modify the theoretical model of injector unit spray angle and the effect of radial slots layout and blocking rate on spray angle was mastered. The results show that the theoretical value of spray angle is in good agreement with the experimental value. Under the constant total injection area and mass flow rate, the radial slots layout has little effect on the spray angle. The spray angle is determined by the local momentum ratio and blocking rate. Whenblocking rate is not more than14.55, the interaction between adjacent injection units is minimal, and the spray angle of gas-liquid pintle multi-injectors is approximate to the spray angle of gas-liquid pintle injector unit. Whenblocking rate is not less than25.46, the recommended value of momentum coefficient in the theoretical formula of spray angle is 0.87.
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备注/Memo
收稿日期:2022-07-25; 修回日期:2023-03-11
基金项目:国家重点基础研究发展计划(613193)
作者简介:张波涛(1990—),男,博士,研究领域为液体火箭发动机设计。
更新日期/Last Update:
1900-01-01