平衡式双螺杆压缩机数值模型构建与数值模拟
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摘要
双螺杆压缩机是工业领域中可燃气等介质回收输送的主流装置。针对使用中的双螺杆压缩机转子单向受力的不足,提出一种可实现工作负载相向配置的平衡式双螺杆压缩机。为研究其工作过程中内部流场特性,基于平衡式双螺杆压缩机工作原理及基本结构建立了其流体数值模型,利用CFD技术,采用SIMPLEC算法及RNG/κ-ε湍流模型对其工作过程进行了数值模拟,得到了平衡式双螺杆压缩机工作过程中流体压力、速度以及密度的分布情况,为平衡式双螺杆压缩机工程应用提供参考。
Twin screw compressor is the mainstream device of the combustible gas and other media recovery and transportation in industrial field. For the defects of the one-way force of the twin-screw compressor in use, a balanced twin-screw compressor which could achieve the opposite configuration of the workload was proposed. In order to study the internal flow field characteristics in the working process, the fluid numerical model was established based on the working principle and basic structure of the balanced twin-screw compressor, and the numerical simulation of the balanced twin-screw compressor working process was carried on by SIMPLEC algorithm and RNG/κ-ε turbulence model of CFD. The distributions of fluid pressure, velocity and density in the process of balanced twin-screw compressor were obtained. It provides reference for the engineering application of balanced twin-screw compressor.
Twin screw compressor is the mainstream device of the combustible gas and other media recovery and transportation in industrial field. For the defects of the one-way force of the twin-screw compressor in use, a balanced twin-screw compressor which could achieve the opposite configuration of the workload was proposed. In order to study the internal flow field characteristics in the working process, the fluid numerical model was established based on the working principle and basic structure of the balanced twin-screw compressor, and the numerical simulation of the balanced twin-screw compressor working process was carried on by SIMPLEC algorithm and RNG/κ-ε turbulence model of CFD. The distributions of fluid pressure, velocity and density in the process of balanced twin-screw compressor were obtained. It provides reference for the engineering application of balanced twin-screw compressor.
引文
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[2] 王小明,杨志,熊国良,等.基于负载平衡配置的新型双螺杆压缩机的设计[J].机床与液压,2012,40(11):80-82.WANG X M,YANG Z,XIONG G L,et al.Design of a New Twin-screw Compressor Based on Load Balanced Configuration[J].Machine Tool & Hydraulics,2012,40(11):80-82.
[3] RANE S,KOVACEVIC A,STOSIC N,et al.Grid Deformation Strategies for CFD Analysis of Screw Compressors[J].International Journal of Refrigeration,2013,36(7):1883-1893.
[4] 王小明,田青青,贺忠宇,等.双吸平衡式螺杆压缩机工作过程的数值模拟[J].机床与液压,2014,42(6):19-23.WANG X M,TIAN Q Q,HE Z Y,et al.Numerical Simulation of the Double Suction Balance Type Screw Compressor Working Process[J].Machine Tool & Hydraulics,2014,42(6):19-23.
[5] 罗嗣骁.平衡式双螺杆压缩机仿真分析与结构参数优化[D].南昌:华东交通大学,2015:9-33.
[6] 熊伟,冯全科.螺杆压缩机研究现状与热点[J].流体机械,2005,33(3):30-33.XIONG W,FENG Q K.Status and Hot Spot of Twin Screw Compressor[J].Fluid Machinery,2005,33(3):30-33.
[7] 王小明,田青青,贺忠宇,等.双螺杆压缩机转子型线的数字化设计[J].组合机床与自动化加工技术,2014(2):114-116.WANG X M,TIAN Q Q,HE Z Y,et al.Digital Design of Twin-rotor Screw Compressor Rotor Profile[J].Modular Machine Tool & Automatic Manufacturing Technique,2014(2):114-116.
[8] 王福军.流体机械旋转湍流计算模型研究进展[J].农业机械学报,2016,47(2):1-14.WANG F J.Research Progress of Computational Model for Rotating Turbulent Flow in Fluid Machinery[J].Transactions of the Chinese Society for Agricultural Machinery,2016,47(2):1-14.
[9] 刘厚林,董亮,王勇,等.流体机械CFD中的网格生成方法进展[J].流体机械,2010,38(4):32-34.LIU H L,DONG L,WANG Y,et al.Overview on Mesh Generation Methods in CFD of Fluid Machinery[J].Fluid Machinery,2010,38(4):32-34.
[10] 张世富,吴杰,张起欣,等.漂浮取水泵内部流场的数值模拟及性能试验[J].流体机械,2016,44(9):1-3.ZHANG S F,WU J,ZHANG Q X,et al.Inner Flow Field Numerical Simulation of Floating Water Pump and Performance Test[J].Fluid Machinery,2016,44(9):1-3.