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早期离心式压缩机的气动力设计都以一元流动理论为基础,并加以适当的工程上的修正,修正系数通常由实验确定。这种方法在工程上是行之有效的,因此直到今天,它仍是我们进行各类离心式压缩机设计的主要方法;同时它也有较大的局限性,特别是这种一元流动理论不能确切地描绘出压缩机通流部分流动的真实情况,因此它不宜于用来作为分析和改进机器性能的理论基础。对于最近出现的大流量、大功率、高效率的压缩机,这种一元流动理论的局限性则更加明显。五十年代初,文献[1]的作者提出了适用于轴流、混流、径流式流体机械的三元流动理论,文献[2][3]则针对离心式压缩机提
The aerodynamic design of early centrifugal compressors is based on the theory of one-dimensional flow and is appropriately corrected in engineering. The correction factor is usually determined experimentally. This method works well in engineering, so it is still the main method that we carry on the design of various types of centrifugal compressors till today. At the same time, it has great limitation. Especially this kind of uniflow theory can not be exact It depicts the real situation of compressor flow through the flow, so it should not be used as a theoretical basis to analyze and improve the performance of the machine. The limitations of this uniflow theory are even more apparent with the recent emergence of high-flow, high-power, high-efficiency compressors. In the early 1950s, the authors of [1] put forward the theory of ternary flow for axial flow, mixed flow and radial flow machines. References [2] [3]