超-超引射器多目标优化设计

推导出了超-超引射器性能计算和优化设计模型，借助Pareto优胜、Pareto最优解和Pareto前端等概念，采用基于多目标进化/分解算法（MOEA/D）的多目标优化方法，计算得到超-超引射器多目标优化问题的Pareto前端，解决了超-超引射器多目标优化设计问题，并与常规参数分析方法进行了比较。结果表明:超-超引射器性能影响参数相互关系复杂，增压比和引射系数作为引射器主要性能参数相互冲突，通过常规分析难以得到较清晰的设计准则，利用多目标优化设计方法可有效地辅助多属性决策和系统优化设计。

Multi-objective optimization of supersonic-supersonic ejector

For supersonic-supersonic ejector, the design model and corresponding analysis were presented, and the relation of design parameters and the performance was partly revealed. The results revealed the confliction of two performance objectives and the complexity of the design problem. To clarify the entangled relation of design parameters and objectives and to afford facilities for the design process, the Pareto front(PF) concept was introduced and an MOEA/D algorithm was programmed to calculate the PFs of specific supersonic-supersonic ejector multi-objective optimization problems. The methodology adopted here proved to be effective and efficient for the supersonic-supersonic ejector design problem.