向心透平稳态全工况性能预测及其实验研究  

DESIGN AND OFF-DESIGN STEADY-STATE CHARACTERISTIC PREDICTION AND ITS EXPERIMENTAL RESEARCH FOR RADIAL - INFLOW TURBINE

作　　者：郭新生[1] 郭中纬[1] 谢立军[2] 

机构地区：[1]西安交通大学能源与动力工程学院,陕西西安710049 [2]海军航空工程学院青岛分院,山东青岛266042

出　　处：《工程热物理学报》2002年第5期547-550,共4页Journal of Engineering Thermophysics

摘　　要：将向心透平膨胀机喷咀入口至叶轮后扩压管出口模拟为单喷管,通过理论分析,推导出向心透平稳态全工况特性通用模型框架。基于实测数据,应用广义最小二乘法,获得通流特性和效率特性二个模型。用该模型预测其它两台透平膨胀机的特性,结果表明:模型实用范围和精度都较好。因此,在设计向心透平时,它可作为典型特性模型,为全工况优化设计提供依据。Simulating a radial-inflow turboexpander from its nozzle inlet to the impeller output as the single nozzle, and through theoretic analysis, this thesis concludes two general characteristic models for design and off-design steady-state of the turboexpanders. Based on experiment data, and generalized least squares method is used in imitation of the data, the coefficient solutions which are needed to describe the models have been obtained. Using the model to predict performance of the other two turboexpanders, the results show that the two general characteristic models in this thesis are more accurate and universal. Therefore, in design of turboexpanders, as two important models, they can give a base for optimizing design and off-design characteristic.

关 键 词：向心透平膨胀机 全工况特性 通用模型 性能预测 单喷管 

分 类 号：TK14[动力工程及工程热物理—热能工程]