摘要
本文采用CFD仿真的方法对运行于双工况的多翼离心风机进行了优化设计。采用非均匀滑移网格和RNG(Re Normalized Group)k-ε模型对多翼离心风机的非定常流场进行计算,对三种多翼离心风机的性能(风量、风压和效率)进行仿真分析和优化设计,较好地满足了双工况运行的风量和风压设计要求,并达到了比较高的风机效率;2,100 m3/h和4,000 m3/h风量工况下分别为56.55%和57.76%。所提出的CFD方法为多翼离心风机的设计和优化提供了有效工具。
The optimization design of a multi-blade centrifugal fan for two working conditions is carried out with CFD simulation method. The unsteady flow field of the centrifugal fan is calculated with the non-uniform sliding mesh and RNG k-εmodel. Three centrifugal fans are simulation analyzed and optimization designed according to their air volume, pressure and efficiency. The results show that, the fans better match the design requirement to the air volume and pressure at two working conditions with high efficiency. The efficiency is 56.55%at air volume of 2,100 m^3/h and the efficiency is 57.76% at the air volume of 4,000 m^3/h. The proposed simulation method provides an effective tool for centrifugal fan design and optimization.
出处
《制冷技术》
2014年第6期13-16,共4页
Chinese Journal of Refrigeration Technology
基金
国家自然科学基金项目(51006113)
北京市市委市政府重点工作及区县政府应急项目(Z141100006014028)
关键词
离心风机
双工况
仿真
优化
计算流体力学
Centrifugal fan
Two working conditions
Simulation
Optimization
CFD
