遠心圧縮機による配管内圧力脈動に関する研究 : 第2報,運転条件が減衰特性に及ぼす影響に関する検討(機械力学,計測,自動制御)

概要

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Damping of pressure pulsations in piping systems excited by centrifugal compressors or blowers at blade-passing frequency dominates acoustic resonant characteristics. In this study, the relation between the resistance coefficient of the compressor and the operating point was investigated experimentally. As a result, the resistance coefficient of the compressor depends on the Reynolds number defined by the equivalent velocity of the pulsating flow. It is shown that the pressure pulsations in piping systems can be evaluated by one-dimensional wave model taking into account the damping characteristics of the compressor. The suppression of the pulsation by installing the orifice plate under resonant conditions is discussed in terms of the ratio of the damping force by the orifice plate to the excitation force.
一般社団法人日本機械学会の論文
2008-03-25