Erratum for “Water Hammer in Coaxial Pipe Systems”
نویسندگان
چکیده
منابع مشابه
Effect of drop in pipe wall stiffness on water-hammer speed and attenuation
The effect of local drop of wall stiffness in pressurized waterways on the pressure wave speed and the wave attenuation during transients is investigated experimentally. A new signal-processing procedure to identify the presence of a weak reach is introduced and validated by physical experimentation based on assessing the pressure and vibration records acquired at both ends of a multi-reach ste...
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Water hammer is one of the unsteady flows in urban water distribution networks, which has been of great importance due to the damage caused to the pipeline and has always been of interest to researchers. In this study, the phenomenon of water hammer due to the sudden closure of the valve in the downstream end has been investigated in a laboratory and using a numerical model. In the laboratory s...
متن کاملImpedance of a Long Slot in a Coaxial Beam Pipe*
We derive an analytical expression for the coupling impedance and loss factor of a long narrow slot in a coaxial beam pipe. The method used differs from the classical Bethe’s theory of diffraction since we define differential polarizabilities to take into account the effect of the interference between the fields scattered all along the slot. The expressions obtained are thus valid even for slot...
متن کاملWater Hammer with Column Separation:
Column separation refers to the breaking of liquid columns in fully filled pipelines. This may occur in a water hammer event when the pressure drops to the vapor pressure at specific locations such as closed ends, high points or knees (changes in pipe slope). A vapor cavity, driven by the inertia of the parting liquid columns, will start to grow. The cavity acts as a vacuum, a low-pressure poin...
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ژورنال
عنوان ژورنال: Journal of the Hydraulics Division
سال: 1975
ISSN: 0044-796X,2690-2524
DOI: 10.1061/jyceaj.0004450