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在全三维反问题还不成熟的条件下 ,由二维反问题和三维正问题组成的准三维设计体系中 ,叶片的前缘是由给定的积迭轴和基元叶型特征决定 ,具有任意性 ,难于对其加以控制。因此本文试图把掠弯叶片的前缘空间曲线作为设计自由度 ,增加到设计体系中 ,实现设计中前缘空间曲线同流场结构的关联 ,利用前缘形状控制流场中的激波结构和二次流的迁移 ,改善流场结构。并以一个高负荷跨音单级风扇的气动设计为例 ,对这一改进进行了验证。
Under the condition of the full three-dimensional inverse problem is not yet mature, in the quasi-three-dimensional design system consisting of two-dimensional inverse problem and three-dimensional positive problem, the leading edge of the blade is determined by the given overlap axis and the leaf feature of the element, Arbitrary, it is difficult to control them. Therefore, this paper attempts to add the leading edge space curve of swept curved blade as the design freedom to the design system to realize the correlation between the leading edge space curve and the flow field structure in the design. The leading edge shape is used to control the shock structure in the flow field and Secondary flow migration, to improve the flow field structure. Taking the aerodynamic design of a high-load trans-single-stage fan as an example, this improvement was verified.