双螺杆压缩机CFD分析新方法的研究与应用

何雪明; 施国江; 武美萍; 张荣; 纪小刚

doi:10.13433/j.cnki.1003-8728.2018.0208

双螺杆压缩机CFD分析新方法的研究与应用

doi: 10.13433/j.cnki.1003-8728.2018.0208

何雪明^1,2,
施国江^1,2,
武美萍^1,2,
张荣³,
纪小刚^1,2

1.
江苏省食品先进制造装备技术重点实验室, 江苏无锡 214122;
2.
江南大学机械工程学院, 江苏无锡 214122;
3.
江南大学理学院, 江苏无锡 214122

基金项目:

国家自然科学基金项目（51275210

51105175）与六大人才高峰资助项目（2013-ZBZZ-016）资助

详细信息

作者简介:
何雪明(1966-),教授,博士,研究方向为自由曲线曲面CAD/CAE/CAM和逆向工程,hxuem2003@163.com

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出版历程
- 收稿日期: 2016-09-25
- 刊出日期: 2018-02-25

Exploring and Applying a New Method of Analyzing CFD of Twin Screw Compressor

1.
Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment and Technology, Jiangsu Wuxi 214122, China;
2.
School of Mechanical Engineering, Jiangnan University, Jiangsu Wuxi 214122, China;
3.
School of Science, Jiangnan University, Jiangsu Wuxi 214122, China

摘要

摘要: 针对实际当中阴阳转子之间的啮合间隙和转子与气缸内壁的间隙最大只有不到几十微米的情况，克服了Fluent动网格计算时为了尽量避免计算过程中出现负体积网格的现象而要将模型间隙放大至毫米级以便画出高质量体网格的不足点，探索出了一种替换动网格技术的新方法用于双螺杆压缩机的CFD计算分析，减小了用于CFD计算的流体域模型的间隙，将模型的间隙处理到微米级甚至为零，有效提升了螺杆压缩机的仿真精度与分析结果的可靠性。新的CFD计算方法中采用ANSA处理器划分双螺杆压缩机流体域的面网格和STAR-CCM+划分体网格的混合处理方式，利用STAR-CCM+中的Morphing技术实现双螺杆压缩机的流体动力学仿真。经过分析，新CFD方法的计算结果与理论和实际情况相符合，可用于指导螺杆转子型线的设计和优化。
- 螺杆压缩机 /
- 模型间隙 /
- CFD /
- ANSA /
- STAR-CCM+ /
- 网格
Abstract: For the case of the clearance between the male and female rotors and the clearance between the rotors and the cylinder is fewer than tens of microns actually, overcoming the shortcomings that it enlarged the model gap to the millimetre level in order to draw a high quality body grid when Fluent moving grid computing so as to avoid the phenomenon of negative volume grid in the process of calculation, a new method to replace the moving grid technology is explored, for the use of CFD calculation and analysis of twin screw compressor. With which, the clearance of the fluid domains for CFD simulation is reduced, and the gap between the model is processed to millimeter level or even zero, meanwhile, the simulation accuracy and reliability of the analysis results are effectively improved. For the new CFD simulation method, the surface meshes of screw compressor fluid domains are generated in ANSA and the grids of the domains are generated with polyhedral meshes and trimmed meshes in STAR-CCM+, and the CFD simulation of screw compressors is carried out by Morphing in STAR-CCM+ solver, whose analysis results are consist with theory and the actual situation,and can be used to guide the screw rotor profiles design and optimization after analysis.
- screw compressor /
- model gap /
- fluid domain /
- CFD /
- ANSA /
- STAR-CCM+

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参考文献(15)

[1]	吴慧媛,何雪明,潘成龙.基于流体仿真的双螺杆压缩机转子型线研究[J].中国机械工程,2013,24(22):3080-3085 Wu H Y, He X M, Pan C L. A preliminary study of screw rotor profile based on fluid simulation[J]. China Mechanical Engineering, 2013,24(22):3080-3085(in Chinese)
[2]	史文延,余晓明,李金峰.双螺杆压缩机转子的有限元模态分析[J].压缩机技术,2012,(4):7-9 Shi W Y, Yu X M, Li J F. Finite element modal analysis of double screw compressor rotor[J]. Compressor Technology, 2012,(4):7-9(in Chinese)
[3]	魏静,孙旭建,孙伟,等.双螺杆捏合机转子型线设计与数值模拟[J].机械工程学报,2013,49(3):63-73 Wei J, Sun X J, Sun W, et al. Research on rotor profiles design method and numerical simulation for twin-screw kneader[J]. Journal of Mechanical Engineering, 2013,49(3):63-73(in Chinese)
[4]	肖根福,刘国平,王俊亭,等.基于动网格的涡旋压缩机内部流场数值模拟[J].机床与液压,2013,41(1):146-149 Xiao G F, Liu G P, Wang J T, et al. Numerical simulation for transient flow in a scroll compressor using dynamic mesh technique[J]. Machine Tool & Hydraulics, 2013,41(1):146-149(in Chinese)
[5]	何家波,张柏清.基于ANSYS的泥料双螺杆挤出机的流场分析[J].陶瓷学报,2012,33(3):339-342 He J B, Zhang B Q. Flow field analysis of ceramic paste twin-screw extruder based on ANSYS[J]. Journal of Ceramics, 2012,33(3):339-342(in Chinese)
[6]	韩向科,钱若军.流体力学基本理论研究综述[J].空间结构,2008,14(3):9-12 Han X K, Qian R J. A study on the basic theory of fluid mechanics[J]. Spatial Structures, 2008,14(3):9-12(in Chinese)
[7]	宋秋红,夏泰淳,王世明,等.工程流体力学[M].2版.上海:上海交通大学出版社,2012 Song Q H, Xia T C, Wang S M, et al. Engineering fluid mechanics[M]. 2nd ed. Shanghai:Shanghai Jiaotong University Press, 2012(in Chinese)
[8]	Rane S, Kovacevic A, Stosic N, et al. Deforming grid generation and CFD analysis of variable geometry screw compressors[J]. Compute & Fluids, 2014,99:124-141
[9]	Kovačević A, Sto·ič N, Smith I K. Development of CAD-CFD interface for screw compressor design[C]//International Conference on Compressors and their Systems. London:IMechE Proceedings, 1999:757-767
[10]	Kovacevic A, Stosic N, Smith I K. Grid aspects of screw compressor flow calculations[C]//Proceedings of the ASME Advanced Energy Systems Division. Orlando FL:ASME, 2000:83-90
[11]	Kovacevic A. Boundary adaptation in grid generation for CFD analysis of screw compressors[J]. International Journal for Numerical Methods in Engineering, 2005,64(3):401-426
[12]	Kovacevic A, Stosic N, Smith I. Screw compressors-three dimensional computational fluid dynamics and solid fluid interaction[M]. Berlin Heidelherg:Springer-Verlag,;007
[13]	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
[14]	张小军,彭学院,邢子文.双螺杆压缩机排气压力脉动理论计算和试验研究[J].压缩机技术,2001,(6):3-6 Zhang X J, Peng X Y, Xing Z W. Theoretic and experimental study on the discharge pressure pulsation of twin screw compressors[J]. Compressor Technology, 2001,(6):3-6(in Chinese)
[15]	吴慧媛,何雪明,戴进.基于CFD的双螺杆压缩机的三维动态仿真分析研究[J].中国机械工程,2013,24(24):3366-3371 Wu H Y, He X M, Dai J. Research on 3D dynamic simulation analysis of screw compressor by CFD[J]. China Mechanical Engineering, 2013,24(24):3366-3371(in Chinese)