|
| Simulation Analysis of Flow Field Characteristics and Optimization Design for Y-Type Three-way Structure |
| Received:January 10, 2025 Revised:February 21, 2025 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2025.04.011 |
| KeyWord:liquid rocket engine flow field simulation straight tube structure Y-type three-way structure structural optimization |
| Author | Institution |
| ZHANG Jingyu |
School of Mechanical Engineering, Beijing Institute of Technology, Beijing , China |
| LIU Yang |
Beijing Aerospace Power Research Institute, Beijing , China |
| HE Kun |
Beijing Aerospace Power Research Institute, Beijing , China |
| LI Xuefei |
Beijing Aerospace Power Research Institute, Beijing , China |
| NIU Lei |
School of Mechanical Engineering, Beijing Institute of Technology, Beijing , China |
| DONG Haiping |
School of Mechanical Engineering, Beijing Institute of Technology, Beijing , China |
|
| Hits: |
| Download times: |
| Abstract: |
| 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. |
| Close |
|
|
|