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http://dx.doi.org/10.11001/jksww.2022.36.4.219

A pressure based flow velocity estimation technique using inverse impedance for simple pressurized pipeline systems  

Lee, Jeongseop (Research Institute of Industrial Technology, Pusan National University)
Ko, Dongwon (Department of Civil and Environmental Engineering, Pusan National University)
Choi, Dooyong (K-water Institute, K-water)
Kim, Sanghyun (Department of Civil and Environmental Engineering, Pusan National University)
Publication Information
Journal of Korean Society of Water and Wastewater / v.36, no.4, 2022 , pp. 219-228 More about this Journal
Abstract
In this study, we propose a flow velocity evaluation scheme based on pressure measurement in pressurized pipeline systems. Conservation of mass and momentum equations can be decomposed into mean and perturbation of pressure head and flowrate, which provide the pressure head and flowrate relationship between upstream and donwstream point in pressurized pipeline system. The inverse impedance formulations were derived to address measured pressure at downstream to evaluation of flow velocity or pressure at any point of system. The convolution of response function to pressure head in downstream valve provides the flow velocity response in any point of the simple pipeline system. Simulation comparison between traditional method of characteristics and the proposed method provide good agreements between two distinct approaches.
Keywords
Pipeline system; Velocity estimation technique; Frequency domain analysis; Unsteady flow analysis;
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