机电工程技术2025，Vol.54Issue(4)：131-135,5.DOI:10.3969/j.issn.1009-9492.2025.04.023
双圆弧叶片对低比转速离心风机气动性能的影响分析
Analysis on the Aerodynamic Effect of Dual-arc Blades on A Low Specific Speed Centrifugal Fan
摘要
Abstract
6-27No.4.5 centrifugal fan is taken as the research object to improve the aerodynamic performance of the low specific speed centrifugal fan.Firstly,a parameterized fan model is established.The aerodynamic characteristics of variable dual-arc blades are simulated on CFX software by solving Reynolds N-S equations.The blades are restructured by modifying the geometric constrains of transition point.Under the condition of unchanging the total pressure of single arc blades fan,a relatively higher effective dual-arc blade fan is established.The results indicates an 1.8%deviation to the simulation result of total pressure at rated volume.The correctness of the simulation method is verified.A further comparison of the effect of the number of blades is made.Finally,the optimal fan with dual-arc blades is designed by response surface method via adjusting inlet parameters.The results show that total pressure of the dual-arc blades fan partially exceeds to the single arc one.Total pressure effectiveness of dual-arc blades fan is visibly higher.The total pressure and effectiveness of the fan increases as the numbers of blades increase initially and decrease afterwards,corresponding to the highest value of the number 16 and 9 respectively.The highest effectiveness of air volume is constant at variable numbers of blades.An increase of 3.3%of total pressure effectiveness is obtained.The flow and the turbulence kinetic energy inside the impeller is clearly improved and decreased respectively.The application of the dual-arc bladeson alow specific speed centrifugal fan can be referred to improve the design of the efficient and energy-saving centrifugal fan.关键词
离心风机/数值计算/优化设计/双圆弧叶片/响应面Key words
centrifugal fan/numerical simulation/optimal design/dual-arc blades/response surface分类
机械制造引用本文复制引用
安然,李瑜,王本义,王硕,韦志宇..双圆弧叶片对低比转速离心风机气动性能的影响分析[J].机电工程技术,2025,54(4):131-135,5.基金项目
辽宁省交通科技项目(202142) （202142）
中车集团重点项目(2024CKB332) （2024CKB332）
