高压比的斜流叶轮与扩压器匹配设计方法的改进  

IMPROVEMENT ON INTEGRATIVE DESIGN METHOD OF HIGH PRESSURE RATIO MIXED-FLOW COMPRESSOR WITH DIFFUSER

作　　者：肖洪[1] 黄生勤[1] 刘振侠[1] 吕亚国[1] 

机构地区：[1]西北工业大学动力与能源学院,陕西西安710072

出　　处：《工程热物理学报》2009年第6期941-943,共3页Journal of Engineering Thermophysics

摘　　要：针对高压比的斜流压气机设计过于依靠叶轮的性能,容易出现较为严重的扩压器与叶轮的匹配问题,改进了斜流压气机的叶轮扩压器匹配设计方法。把叶轮及叶轮出口的无叶扩压器段作为一个整体,将单一的叶轮出口设计扩展为叶轮出口加出口无叶掺混段设计,将掺混过程用一个连续的过程描述,来提高一维设计力法的匹配设计能力。用该方法完成某单级斜流压气机的气动设计,级性能满足设计要求,表明改进后的匹配设计方法可用于高压比的斜流压气机设计。For the design of high pressure ratio mixed-flow compressor, the common method is too rely on the impeller performance which is easily lead to more serious diffuser-impeller matching problem. A integrative design method is present. The impeller/diffuser is treated as a whole and the design process is controlled by the matches between the impeller and diffuser, diffuser and diffuser to get the overall stage performance and the final design goals is got by optimizing the integration design. A complete design of a mixed-flow compressor is introduced on the basis of one-dimensional integrative design approach. The ultimate 3-D analysis shows that the whole stage performance meets the design requirements which prove that the integrative design methods can be used to mixed-flow Compressor design.

关 键 词：斜流式压气机 叶轮/扩压器 匹配设计 改进 

分 类 号：V231.3[航空宇航科学与技术—航空宇航推进理论与工程]