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By Kaveh Hariri Asli; et al
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Extra resources for Advances in control and automation of water systems
And Weinerowska, K. (2005). Some aspects of physical and numerical modeling of water hammer in pipelines. In: International symposium on water management and hydraulic engineering, pp. 125–133. 8. Ghidaoui, M. S. and Kolyshkin, A. A. (2001). Stability analysis of velocity profiles in water hammer flows. Journal of Hydraulic Engineering 127(6), 499–512. 9. Hariri, K. (2007a). Decreasing of unaccounted for water “UFW” by Geographic Information System “GIS” in Rasht Urban Water System. Technical and Art.
3) (Joukowski Formula) In 1902, Allievi independently developed a similar elastic relation and applied it to a uniform valve closure. 4) (Allievi Formula) The elastic theory developed by these two pioneers is fundamental to the field of hydraulic transients. The combined elasticity of both the water and the pipe walls is characterized by the pressure wave speed, a. This relation is a simplified form of the equation applicable to an instantaneous stoppage of velocity . 5) initial conditions. For an instantaneous valve closure or stoppage of flow, the upsurge pressure (H– Ho) is known as the “Joukowski head”.
Advanced flow and pressure sensors equipped with high-speed data loggers and “PLC” in water pipeline makes it possible to capture fast transients, down to 5 milliseconds. Methods such as inverse transient calibration and leak detection in calculation of Unaccounted for Water (UFW) use such data. Location for Field Tests and Lab. model was at Rasht city in the north of Iran. Pilot subject was named “Interpenetration of two fluids at parallel between plates and turbulent moving in pipe”. For data collection process, Rasht city water main pipeline have been selected as Field Tests Model.
Advances in control and automation of water systems by Kaveh Hariri Asli; et al