ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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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 |
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 |
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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.
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Received: 25 August 2014
Revised: 07 October 2014
Accepted manuscript online:
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PACS:
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47.27.nf
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(Flows in pipes and nozzles)
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47.85.Dh
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(Hydrodynamics, hydraulics, hydrostatics)
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Fund: 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). |
Corresponding Authors:
Jiang Dan
E-mail: jdan2002@uestc.edu.cn
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Cite this article:
Jiang Dan (蒋丹), Li Song-Jing (李松晶), Yang Ping (杨平), Zhao Tian-Yang (赵天扬) Frequency-dependent friction in pipelines 2015 Chin. Phys. B 24 034701
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