On the Use of the Water Hammer Equations with Time Dependent Friction during a Valve Closure, for Discharge Estimation
سال انتشار: 1395
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 159
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شناسه ملی سند علمی:
JR_JAFM-9-5_032
تاریخ نمایه سازی: 3 بهمن 1400
چکیده مقاله:
The paper presents a new method for in site discharge estimation in pressured pipes. The method consists in using the water hammer equations solved with the method of characteristics with an unsteady friction factor model. The differential pressure head variation measured during a complete valve closure is used to derive the initial flow rate, similarly to the pressure-time (Gibson) method. The method is validated with a numerical experiment, and tested with experimental laboratory measurements. The results show that the proposed method can reduce the discharge estimation error by ۰.۶% compared to the standard pressure-time (Gibson) method for the flow rate investigation.
کلیدواژه ها:
نویسندگان
G. Dunca
University POLITEHNICA of Bucharest, Romania
R. G. Iovănel
University POLITEHNICA of Bucharest, Romania
D. M. Bucur
University POLITEHNICA of Bucharest, Romania
M. J. Cervantes
Norwegian University of Science and Technology, Trondheim, Norway