Journal of Korean Society of Water and Wastewater (상하수도학회지)

The Korean Society of Water and Wastewater (대한상하수도학회)
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Extended inverse impedance method for multiple branches or loops pipeline systems

복합 관수로에서 인버스 임피던스 확장연구

  • Dongwon Ko (Department of Civil and Environmental Engineering, Pusan National University) ;
  • Sanghyun Kim (Department of Civil and Environmental Engineering, Pusan National University)
  • 고동원 (부산대학교 공과대학 사회환경시스템공학과) ;
  • 김상현 (부산대학교 공과대학 사회환경시스템공학과)
  • Received : 2023.12.01
  • Accepted : 2023.12.14
  • Published : 2023.12.15
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Abstract

We propose a transient evaluation scheme using a pressure measurement in a complicate pipeline systems. Conservation of mass and momentum equations in time domain can be transformed into a pressure head and flowrate relationship between upstream and downstream point in frequency domain. The impedance formulations were derived to address measured pressure at downstream to evaluate of flowrate or pressure head at any point of system. Both branched pipeline element and looped pipeline element can be generally addressed in the platform of the basic reservoir pipeline valve system. The convolution of time domain response function with measured pressure head from a downstream point provides flowrate or pressure head response in any point of the designated pipeline system. The proposed method was validated through comparison between traditional method of characteristics and the proposed method in several hypothetical systems.

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Acknowledgement

이 과제는 부산대학교 기본연구지원사업(2년)에 의하여 연구되었음.

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