航空发动机动态总压探针结构设计与优化

Design and optimization of dynamic total pressure probe structure in aero-engines

提出一种具有强化散热结构的短测管型总压探针方案,建立了总压探针的多物理场数值模拟模型,提出一种基于数值模拟和改进粒子群算法的总压探针结构联合优化方法,采用混合网格划分技术减少网格数量,以正态分布初始化粒子位置,同时增加种群学习因子和自适应邻域比例,提高算法的优化效率。数值仿真结果表明,数值模拟模型中网格顶点数量减少了47%,改进后优化算法迭代代数减少了37%,优化效率高,获得的总压探针结构满足温度约束,且长度短、质量轻。

A short-tube total pressure probe with an enhanced heat transfer structure was proposed.The multi-physical numerical simulation model of the probe was established.Based on the numerical simulation and the improved Particle Swarm Algorithm,a joint approach was proposed to optimize the probe’s structure.A hybrid grid generation technology was utilized to reduce the number of meshes.The normal distribution was employed to initialize the particle’s position.The social adjustment weight and the neighbor fraction were increased to improve the optimization efficiency of the algorithm.The simulation results showed that the number of grid vertices was reduced by 47%,and the iteration of optimization was reduced by 37%;the optimization efficiency was improved.The optimized total pressure probe satisfied the temperature constraints with the short length and the light mass.