串列叶栅叶片周向相对位置对风机性能的影响
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摘要
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。
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.
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.
引文
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[12]蔡娜,钟芳源.弯掠动叶扩大稳定工作范围的实验研究[J].航空动力学报,1996,11(3):229-232.
[13]王维,楚武利.轴流压缩机转子叶顶扩稳结构设计[J].风机技术,2012(1):23-26.
[14]刘乐,南希,李继超,等.基于周向单槽的低速轴流压气机扩稳方式研究[J].工程热物理学报,2012,33(12):2063-2066.
[2]吴国钏.串列叶栅理论[M].北京:国防工业出版社,1996.
[3]Wennerstrom,A.J.Highly Loaded Axial Flow Compressors:History and Current Developments[J].Journal of Turbomachinery,1990,112(4):567-578.
[4]苗厚武,高金满,郭捷.串列叶片的应用研究[J].航空动力学报,1991,6(3):203-206.
[5]李绍斌,王松涛,冯国泰,等.串列叶栅后排静叶周向位置对压气机性能影响的数值研究[J].工程热物理学报,2004,25(6):943-945.
[6]陈美宁,朴英,王大磊.某型航空发动机风扇串列叶栅的数值模拟[J].航空动力学报,2010,25(5):1117-1122.
[7]周帆,叶舟.T40风机最佳轮毂比数值优化分析[J].风机技术,2012(5):9-13.
[8]吕峰,赵燕杰.叶片顶切对大型轴流风机性能的影响[J].风机技术,2012(2)18-22.
[9]刘颖,郑水英,沈海涛.翼型厚度对轴流风机性能的影响[J].风机技术.2013(2)15-18.
[10]赵丹丹,赛庆毅,戴韧.环量分布控制轴流风扇气动性能的机理分析[J].风机技术.2012(4):23-27.
[11]Yang B,Gu C G.The Effects of Radially Distorted Incident Flow on Performance of Axial-Flow Fans With Forward—Skewed Blades[J].Journal of turbomachinery,Vol.135,No.4,2013,011039.1-011039.12.
[12]蔡娜,钟芳源.弯掠动叶扩大稳定工作范围的实验研究[J].航空动力学报,1996,11(3):229-232.
[13]王维,楚武利.轴流压缩机转子叶顶扩稳结构设计[J].风机技术,2012(1):23-26.
[14]刘乐,南希,李继超,等.基于周向单槽的低速轴流压气机扩稳方式研究[J].工程热物理学报,2012,33(12):2063-2066.