Abstract
According to the previous report of the present author, it was found that the surging point of a multi-stage axial-flow compressor can be elucidated to a certain extent, even in the case where the compressor is divided into a relatively small number of parts. In this report, as the simplest treatment, a multi-stage axial-flow compressor was divided into only two parts-the part of lower pressure and that of higher pressure. Then, the relations of the ratio of the respective inertance and capacitance of the two parts to the appearing point of surging were made clear, and the surging characteristics were also determined by means of examples of calculation. As a result, the properties of surging lines and the cause of their appearance, which are peculiar to the multistage axial-flow compressor and have been known empilically, were demonstrated clearly.
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