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| Fluid state analysis on flow field of gas sealwith spiral groove based on CFD |
| Ding Xuexing1,2, Fu Yingjie1, Zhang Jing1, Zhang Weizheng1,2, Yu Shurong1,2 |
| (1. College of Petrochemical Technology, Lanzhou University of Technology, Lanzhou, Gansu 730050, China; 2.Wenzhou Research Institute of Pump and Valve Engineering,Lanzhou University of Technology, Wenzhou, Zhejiang 325105, China) |
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Abstract The three dimensional model of spiral groove gas seal is carried out and meshed by Gambit software.On certain occasions, there are two flow patterns named laminar and turbulence in the three dimensional micro groove. The two kind of flow patterns are simulated with Fluent software. As a result, their pressure distribution, velocity distribution and leakage were obtained. With the simulation results, theoretical calculations proceeds according to the velocity of flow factor.The results show that fluid state in spiral groove gas face seal is based on laminar on certain operating conditions. The simulation leakage and the experimental data are compared and analyzed. The laminar leakage data of 6.92×10 -6 m3/s is very similar to the experimental one of 6.94×10 -6 m3/s. In conclusion, fluid state in spiral groove gas face seal is based on laminar in certain operating conditions.
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Received: 13 November 2009
Published: 30 July 2010
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| [1]孙泽刚,黄文权.机械密封密封腔的流场及温度场[J].排灌机械,2009,27(3):200-203.Sun Zegang,Huang Wenquan.Simulation of flow field and temperature field for mechanical seal cavity[J].Drainage and Irrigation Machinery,2009,27(3):200-203.(in Chinese)[2]李凤芹,王强,宋远红.压缩机用螺旋槽干气密封技术[J].风机技术,2008(1):33-36.Li Fengqin,Wang Qiang,Song Yuanhong.Technology of spiral groove dry gas seal for compressors[J].Compressor,Blower ＆ Fan Technology,2008(1):33-36.(in Chinese)[3]郭顺贵,周先华.离心泵的轴封技术[J].排灌机械,2007,25(4):22-26.Guo Shungui,Zhou Xianhua.Radial sealing technology on centrifugal pump[J].Drainage and Irrigation Machinery,2007,25(4):22-26.(in Chinese)[4]Bloch H P.Consider dry gas seals for centrifugal compressors[J].Hydrocarbon Processing,2005,84(1):9-10.[5]Tabata H,Sano M.Study of high efficiency turbocompressor:Development of high-speed and high-pressure Dry-Gas-Seal[J].IHI Engineering Review,2004,4(5):301-305.[6]Aimone R J,Forsthoffer W E,Salzmann R M.Dry gas seal systems-Part 2:Best practices for design and selection,which can help prevent failures[J].Turbomachinery International,2007,48(2):24-26.[7]黄义仿,丁雪兴,郑劲,等.干气密封螺旋槽内气体流场的有限元模拟[J].化工机械,2007,34(2):95-97.Huang Yifang,Ding Xuexing,Zheng Jin,et al.Finite element simulation of the gas flow field in the dry gas seal spiral grooves[J].Chemical Engineering ＆ Machinery,2007,34(2):95-97.(in Chinese)[8]丁雪兴,陈德林,张伟政,等.螺旋槽干气密封微尺度流动场的近似计算及其参数优化[J].应用力学学报,2007,24(3):425-428.Ding Xuexing,Chen Delin,Zhang Weizheng,et al.Approximate calculation and parameters optimization for micro-scale flow field in spiral grooved gas seals[J].Chinese Journal of Applied Mechanics,2007,24(3):425-428.(in Chinese)[9]丁雪兴,张鹏高,黄义仿,等.螺旋槽干气密封微间隙流动场的CFD数值模拟[J].化工机械,2008,36(5):287-290.Ding Xuexing,Zhang Penggao,Huang Yifang,et al.Numerical simulation of computational fluid dynamics (CFD) of the micro-scale flow field in the spiral groove dry gas seals[J].Chemical Engineering ＆ Machinery,2008,36(5):287-290.(in Chinese)[10]Launder B E,Spalding D B.Lectures in Mathematical Models of Turbulence[M].London:Academic Press,1972.[11]Yakhot V,Orszag S A.Renormalization group analysis of turbulence[J].Journal of Scientific Computing,1986,1(1):3-51.[12]Brunetiere N,Tournerie B,Frene J.Influence of fluid flow regime on performances of non-contacting liquid face seals[J].Journal of Tribology,2002,124(3):515-523. |
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