CAJ | 학술논문

针对一款轴流式子午加速风机，利用数值模拟的方法，研究了串列动叶前后叶片在不同相对周向位置下的风机性能。通过分析得出了改变串列动叶前后叶片周向相对位置，可以降低风机的流量和压比，其调节效果相当于降低风机转速；且注意到串列动叶前后叶片周向相对位置，对风机稳定工作范围有较大影响，合理选择串列动叶前后叶片周向相对位置，可以有效扩大风机的稳定工作范围。
침대일관축류식자오가속풍궤，이용수치모의적방법，연구료천렬동협전후협편재불동상대주향위치하적풍궤성능。통과분석득출료개변천렬동협전후협편주향상대위치，가이강저풍궤적류량화압비，기조절효과상당우강저풍궤전속；차주의도천렬동협전후협편주향상대위치，대풍궤은정공작범위유교대영향，합리선택천렬동협전후협편주향상대위치，가이유효확대풍궤적은정공작범위。
A numerical study on performances of a axial-flow meridian acceleration fan under different circumferential positions of the rear blades of tandem rotor is conducted in this paper. According to the computed results, changes of the circumferential position of the tandem rotor can reduce the flow and the pressure ratio of the fan, which is similar to the effect of reducing the speed of the fan. It is also showed by the results that the circumferential position of the tandem rotor has strong effects on the steady working range of the fan. Proper circumferential position of the tandem rotor can enlarge the steady working range of the fan effectively.