›› 2015, Vol. 24 ›› Issue (3): 34701-034701.doi: 10.1088/1674-1056/24/3/034701

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Frequency-dependent friction in pipelines

蒋丹a, 李松晶b, 杨平a, 赵天扬a   

  1. a School of Mechatronics Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China;
    b School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China
  • 收稿日期:2014-08-25 修回日期:2014-10-07 出版日期:2015-03-05 发布日期:2015-03-05
  • 基金资助:
    Project supported by the National Science Fund for Distinguished Young Scholars of China (Grant No. 51205045) and the Fundamental Research Funds for the Central Universities, China (Grant No. ZYGX2011J083).

Frequency-dependent friction in pipelines

Jiang Dan (蒋丹)a, Li Song-Jing (李松晶)b, Yang Ping (杨平)a, Zhao Tian-Yang (赵天扬)a   

  1. a School of Mechatronics Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China;
    b School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China
  • Received:2014-08-25 Revised:2014-10-07 Online:2015-03-05 Published:2015-03-05
  • Contact: Jiang Dan E-mail:jdan2002@uestc.edu.cn
  • Supported by:
    Project supported by the National Science Fund for Distinguished Young Scholars of China (Grant No. 51205045) and the Fundamental Research Funds for the Central Universities, China (Grant No. ZYGX2011J083).

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摘要： A comprehensive study of modeling the frequency-dependent friction in a pipeline during pressure transients following a sudden cut-off of the flow is presented. A new method using genetic algorithms (GAs) for parameter identification of the weighting function coefficients of the frequency-dependent friction model is described. The number of weighting terms required in the friction model is obtained. Comparisons between simulation results and experimental data of transient pressure pulsations close to the valve in horizontal upstream and downstream pipelines are carried out respectively. The validity of the parameter identification method for weighting function coefficients and the calculation method for the number of weighting terms in the friction model is confirmed.

关键词: frequency-dependent friction, pipeline, pressure transients, weighting function

Abstract: A comprehensive study of modeling the frequency-dependent friction in a pipeline during pressure transients following a sudden cut-off of the flow is presented. A new method using genetic algorithms (GAs) for parameter identification of the weighting function coefficients of the frequency-dependent friction model is described. The number of weighting terms required in the friction model is obtained. Comparisons between simulation results and experimental data of transient pressure pulsations close to the valve in horizontal upstream and downstream pipelines are carried out respectively. The validity of the parameter identification method for weighting function coefficients and the calculation method for the number of weighting terms in the friction model is confirmed.

Key words: frequency-dependent friction, pipeline, pressure transients, weighting function

中图分类号:  (Flows in pipes and nozzles)

  • 47.27.nf
47.85.Dh (Hydrodynamics, hydraulics, hydrostatics)