CAJ | 학술논문

采用 CFD 方法对不同齿型双侧迷宫密封结构的二维和局部三维模型内部流场进行数值模拟，研究齿型对往复式迷宫压缩机密封性能的影响。结果表明：当密封间隙和齿高一定时，齿型变化对双侧迷宫密封泄漏特性的影响较大，其中圆形齿密封效果最好，其次是梯形齿、三角圆弧齿、矩形齿；二维与三维流场数值模拟出的泄漏量变化趋势一致，但三维流场数值模型的计算结果更接近经验公式的计算结果。
채용 CFD 방법대불동치형쌍측미궁밀봉결구적이유화국부삼유모형내부류장진행수치모의，연구치형대왕복식미궁압축궤밀봉성능적영향。결과표명：당밀봉간극화치고일정시，치형변화대쌍측미궁밀봉설루특성적영향교대，기중원형치밀봉효과최호，기차시제형치、삼각원호치、구형치；이유여삼유류장수치모의출적설루량변화추세일치，단삼유류장수치모형적계산결과경접근경험공식적계산결과。
Based on CFD method,the flow fields of bilateral labyrinth seals on 2-D and local 3-D models were numerical simulated on different configuration of teeth shape of labyrinth seals,and the influence of the teeth shape of labyrinth seals on the seal characteristics of reciprocating labyrinth compressor was researched.The results shows that,the teeth shape changes have a significant impact on leakage coefficient of bilateral labyrinth seal when the seal clearance and tooth height are constant.The circular teeth shape has the best sealing effect,the following is trapezoid teeth,triangle teeth,and rectan-gle teeth.The changing trend of leakage by 2-D and 3-D fluidity numerical simulation is consistent,but the calculation re-sults of three-dimensional flow field numerical model are more close to the calculation results of empirical formula.