| 张靖宇,柳洋,何昆,李雪飞,牛磊,董海平.Y形三通结构流场特性仿真分析及优化设计[J].装备环境工程,2025,22(4):82-91. ZHANG Jingyu,LIU Yang,HE Kun,LI Xuefei,NIU Lei,DONG Haiping.Simulation Analysis of Flow Field Characteristics and Optimization Design for Y-Type Three-way Structure[J].Equipment Environmental Engineering,2025,22(4):82-91. |
| Y形三通结构流场特性仿真分析及优化设计 |
| Simulation Analysis of Flow Field Characteristics and Optimization Design for Y-Type Three-way Structure |
| 投稿时间：2025-01-10 修订日期：2025-02-21 |
| DOI：10.7643/issn.1672-9242.2025.04.011 |
| 中文关键词: 液体火箭发动机 流场仿真 直管结构 Y形三通结构 结构优化中图分类号:V434.1 文献标志码:A 文章编号:1672-9242(2025)04-0082-10 |
| 英文关键词:liquid rocket engine flow field simulation straight tube structure Y-type three-way structure structural optimization |
| 基金项目: |
|
|
| Author | Institution |
| ZHANG Jingyu | School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China |
| LIU Yang | Beijing Aerospace Power Research Institute, Beijing 100076, China |
| HE Kun | Beijing Aerospace Power Research Institute, Beijing 100076, China |
| LI Xuefei | Beijing Aerospace Power Research Institute, Beijing 100076, China |
| NIU Lei | School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China |
| DONG Haiping | School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China |
|
| 摘要点击次数: |
| 全文下载次数: |
| 中文摘要: |
| 目的 提升新一代重型运载火箭发动机点火可靠性。方法 基于ANSYS Fluent流体仿真方法，对单火药点火器直管结构与双火药点火器Y形三通结构的气体流场特性展开对比研究。对2种经过优化的Y形三通结构开展流体仿真，对比不同优化设计对输出性能的影响。结果 2种结构的压力与温度均沿流动方向递减，速度则递增，且后端变化更为显著。双点火器Y形三通结构的出口压力达0.43 MPa，较单点火器直管结构(0.19 MPa)提升126.3%，速度与温度差异小于5%。此外，当单侧点火器故障时，Y形三通结构的出口压力降低15.8%，输出性能仍与单点火器直管结构相当。Y形连接处添加圆角可使出口压力提升14%，管径缩减至6 mm，则使压力提升102.3%。结论 双火药点火器Y形三通结构具有冗余作用，对Y形三通结构的优化设计可以提高其点火能力，研究成果为液体火箭发动机点火结构设计提供了数据支撑。 |
| 英文摘要: |
| The work aims to enhance the ignition reliability of new generation heavy lift rocket engines. A comparative study was conducted on the gas flow field characteristics of the single gunpowder igniter straight tube structure and the double gunpowder igniters Y-type three-way structure using ANSYS Fluent computational fluid dynamics simulations. Fluid simulation was used on two optimized Y-type three-way structures to compare the effects of different optimization design on output performance. The pressure and temperature of both structures decreased along the flow direction, while the velocity increased, and more pronounced changes were observed downstream. The outlet pressure of the double gunpowder igniters Y-type three-way structure reached 0.43 MPa, representing a 126.3% increase compared with the singleigniter straight tube structure (0.19 MPa), while velocity and temperature differences remained below 5%. Additionally, when one igniter failed, the outlet pressure of the Y-type three-way structure decreased by 15.8%, maintaining output performance comparable to the single gunpowder igniter straight tube structure. When the fillet radius was added at the Y-junction, the outlet pressure increased by 14%. And when the pipe diameter was reduced to 6 mm, and the pressure increased by 102.3%. In conclusion, the Y-type three-way structure has a redundant effect, and its optimized designs substantially enhance ignition performance. The research results can provide data support for the ignition structure design of liquid rocket engines. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|
