多级吸附式压气机末级静子叶型构型方法研究

发布时间：2019-01-01 09:05

【摘要】：针对某多级低反力度吸附式压气机末级静子较薄,存在叶片抽吸结构设计困难的问题,设计了三种叶型构型——传统双圆弧叶型、优化叶型以及串列静子作为末级静子主流区叶型备选方案。借助数值模拟的方法,详细对比分析了三种构型方案的变工况性能及其内部流场结构特点。结果表明,当叶型扩压因子超出常规设计范畴时,传统双圆弧叶型设计点处于损失急剧增加的位置;优化叶型通过合理调整叶型内部压力场分布,显著降低了设计点附近及正冲角下的总压损失,但大负冲角下,压力面分离损失加剧;基于原型双圆弧叶型参数设计的串列静子具有更佳的气动性能,在全工况范围内,损失均低于单列叶片。
[Abstract]:In order to solve the problem that the final stage stator of a multistage low counterforce adsorption compressor is thin and difficult to design the suction structure of the blade, three kinds of blade configurations, traditional double circular arc blade type, are designed. The optimization of blade profile and cascade stator as the final stage of the main stream of stator blade alternative. By means of numerical simulation, the performance of three configuration schemes and the characteristics of internal flow field structure are compared and analyzed in detail. The results show that when the expansion factor of blade shape is beyond the scope of conventional design, the traditional design point of double arc blade is in the position where the loss increases sharply. The total pressure loss near the design point and at the positive angle of incidence is significantly reduced by adjusting the distribution of the internal pressure field of the blade profile reasonably, but the separation loss of the pressure surface increases at the large negative angle of incidence. The series stator designed based on the parameters of the prototype double circular arc blade has better aerodynamic performance and the loss is lower than that of the single row blade in the whole operating condition.
【作者单位】：哈尔滨工业大学发动机气体动力研究中心;哈尔滨船舶锅炉涡轮机研究所;
【基金】：国家自然科学基金创新研究群体项目(No.1121004);国家自然科学基金项目(No.51436002,No.51206035)
【分类号】：TK403

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