摘要
阐述了在深入分析离心压缩机出口异径管内的流体流动特性,为异径管的优化设计和性能评估提供理论支撑。采用FLUENT软件中的Realizable k-ε湍流模型,对不同变径比的异径管进行了数值模拟。结果表明:随着异径比增大,压降和速度差增大,流体流出速度减小,影响管道系统的输送效率和稳定性。为优化设计,对DN250×100异径管进行了倒角处理,结果显示管道压降显著降低68.5%,流体流动性能得到改善,为异径管的实际应用提供了有益参考。
This study aims to deeply analyze the fluid flow characteristics in the outlet reducer of centrifugal compressor and provide theoretical support for the optimized design and performance evaluation of the reducer.The numerical simulation of the reducer pipe with different reducing ratios was carried out by using the Realizable k-epsilon turbulence model in FLUENT software.The results show that as the reducer ratio increases,the pressure drop and velocity difference increase,the fluid outflow velocity decreases,which affects the conveying efficiency and stability of the piping system.In order to optimize the design,the DN250×100 reducer is chamfered,and the results show that the pressure drop of the pipe is significantly reduced by 68.5%,and the fluid flow performance is improved,which provides a useful reference for the practical application of reducer.
作者
冉东
季维澳
张早校
段权
RAN Dong;JI Wei-ao;ZHANG Zao-xiao;DUAN Quan(School of Chemical Engineering and Technology,Xi′an Jiaotong University,Xi′an 710000,China)
出处
《压缩机技术》
2025年第4期1-6,共6页
Compressor Technology
基金
重庆市博士后研究项目特别资助(2023CQBSHTB3013)。
