スクリュー圧縮機用ロータの接触解析 : 第1報,ロータ歯面の3次元曲率解析と内部漏れへの影響(流体工学,流体機械)

概要

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We propose a method of three dimensional curvature analysis for the rotor surface of screw compressors. By applying this method, we can calculate a normal curvature, that is perpendicular to a sealing line. Such a curvature is required to calculate internal leak flow and contact stress between rotors. Internal leaks reduce compressor efficiency, and contact stress is an important parameter for inspecting the reliability of a rotor's surface strength. The leak flow for each cross section is computed by cubic interpolated propagation (CIP), a type of numerical fluid dynamics. Our results show that when a sealing line gap is uniformly 50μm and the fluid is compressed air, the curvature difference on the sealing line doubles leak flow. The total leak flow of the trailing side leak is 2.5 times that of the leading side.
一般社団法人日本機械学会の論文
2004-04-25