For large aircraft continued imbalance vibration superposition assembly stress can cause fuel line leak problem, taking a typical engine model as the research object, analyzing the engine core module of space structure and the distribution of fuel line, the leakage form and amount of the fuel pipeline in the core cabin were analyzed by introducing the fuel leakage accident in the core cabin; The cold state of oil and gas leakage is calculated based on the model, and the influence of the leakage position on the cold state flow field is researched. For crack and installation of two types of leakage, the diffusion and flow of oil and gas are analyzed by simulation. The results show that the crack leakage is relatively large and fast, and diffuses to different parts of the engine room with the mixing of air. However, the leakage quantity of installation leakage is small, and the oil and gas leakage quantity is small and spreads only near the leakage mouth. No matter where the leakage position is, there will be high-speed airflow and corresponding high-pressure area in the leakage mouth.
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吴晶峰,杨昭,陈义成,等. 航空发动机核心舱燃油泄漏流动[J]. 科学技术与工程, 2021, 21(1): 395-402. Wu Jingfeng, Yang Zhao, Chen Yicheng, et al. Study on fuel leakage flow in core tank of aero engine[J]. Science Technology and Engineering,2021,21(1):395-402.