缘线匹配通过考虑多叶排叶轮机相邻叶排间前排叶片尾缘线与后排叶片前缘线空间相对位置匹配关系来进一步提升叶轮机性能,有潜力使叶轮机非定常设计走向工程实际。以一单级跨声轴流压气机和一单级轴流透平为例,尝试用基元流动展向积分方法和全优化方法改善其性能,从而示例应用缘线匹配的具体方法及前景。结果表明,缘线匹配为叶轮机非定常设计提供了可操作的自由度。 Marginal Matching The impeller performance is further enhanced by considering the relative position match between the trailing edge of the front blade and the leading edge of the blade in the adjacent blade row of a multi-bladed row impeller, which has the potential to make the unsteady design of the impeller to work actual. Taking a single-stage transonic axial compressor and a single-stage axial turbine as an example, we attempt to improve the performance of the integrated flow-wise integration method and the full optimization method, so as to illustrate the specific methods and prospects for the application of margin matching. The results show that the edge matching provides the operable degree of freedom for the unsteady design of the turbine.