A315 スクロール圧縮機の脈動解析

概要

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The noise prediction of scroll compressor is one of the most important problems to reduce the noise. This study is the first step to predict the noise, which is caused by pressure pulsation. In previous works, we analyzed the discharge pressure pulsation by CFD with 1-dimensional straight tube model, which had same cross-sections. However the model was in need of the experimental values such as the equivalent sound length of compression chambers. From this reason it was impossible to predict the frequency pattern of noise. In this study, we developed a new 1-dimensional tube model, which has variable cross-sections to consider the change of compression chamber shapes. From analysis of the pressure pulsation frequency spectrum, it is confirmed the new model can predict reasonably the change of the sound power level by the setting of the lead valve.
日本流体力学会の論文
2000-07-25