CAJ | 학술논문

以某型离心压气机为研究对象，利用流场仿真软件对不同污染程度的压气机性能进行数值计算，对比流场特性的变化，分析了积垢造成压气机性能损失的程度。结果表明：积垢对离心压气机性能的主要影响是降低压气机效率，原因是积垢改变了叶片表面粗糙度，增加了摩擦损失；扩大了叶片后缘和出口附近的低速回流区的范围，增强了回流强度，加大了流动损失。
이모형리심압기궤위연구대상，이용류장방진연건대불동오염정도적압기궤성능진행수치계산，대비류장특성적변화，분석료적구조성압기궤성능손실적정도。결과표명：적구대리심압기궤성능적주요영향시강저압기궤효솔，원인시적구개변료협편표면조조도，증가료마찰손실；확대료협편후연화출구부근적저속회류구적범위，증강료회류강도，가대료류동손실。
The performance of centrifugal compressor before and after being polluted is numerically calculated by floating field simulation software. The mechanism of compressor performance deterioration caused by incrustation was analyzed by comparing the chance of compressor flow field. The result was that the main effects of incrusta-tion on centrifugal compressor was to reduce compressor efficiency, because incrustation changed the blade sur-face roughness, increased friction loss, expanded the low speed range near the trailing edge and outlet, en-hanced the backflow, and increased the flow loss.