Results 21 to 30 of about 281,362 (305)

Calculation of the hydraulic stroke in the Mlečva MHPP pipeline caused by sudden closing of the closer [PDF]

open access: yesTehnika, 2018
Water hammer is a pressure surge phenomenon that occurs in pressurised pipelines as a result of a change of the flow velocity. This paper presents analyses of water hammer in the pipeline of mini-hydro power plant (MPP) Mlečva in Bratunac, Republika ...
Praštalo Petar R.
doaj  

WATER HAMMER IN PIPELINE WITH DIFFERENT CHARACTERISTICS OF VALVE CLOSING AND UNSTEADY WALL FRICTION [PDF]

open access: yesCivil Engineering Journal, 2019
This paper presents an analytical investigation of water hammer pressure variation in a reservoir-pipe-valve system. Laplace transform method is used to get the analytical solutions for different characteristics of the valve closing. Specifically, sudden
Haixiao Jing, Wen Wang , Guodong Li
doaj   +1 more source

The use of titanium alloys for details of downhole hammers [PDF]

open access: yes, 2016
The influence of cementation technology of titanium alloy Ti-Al-Mn on its wear resistance is studied. It is established that after lubrication a friction pair with mineral oil the wear resistance of the cemented titanium alloy is comparable to wear ...
Alekseev, S. E.   +4 more
core   +1 more source

Experimental studies of water hammer in propellant feed system of reaction control system

open access: yesPropulsion and Power Research, 2018
Water hammer pressure transient produces large dynamic forces which can damage the pipes and other assemblies in the feed line of a reaction control system (RCS).
Avanish Kumar   +2 more
doaj   +1 more source

Numerical comparison of pipe-column-separation models [PDF]

open access: yes, 1994
Results comparing six column-separation numerical models for simulating localized vapor cavities and distributed vaporous cavitation in pipelines are presented.
Angus R. Simpson   +5 more
core   +1 more source

Analysis of natural gas flow reversal in integrated energy system based on dynamic simulation

open access: yesEnergy Reports, 2021
The inertial water hammer pressure propagates along the pipeline at the speed of sound wave, which makes the pressure along the pipeline rise or fall rapidly and the inertial water hammer pressure attenuate in the process of propagation.
Jiang Zhai, Xiaoxin Zhou, Yalou Li
doaj   +1 more source

Water Hammer Control Analysis of an Intelligent Surge Tank with Spring Self-Adaptive Auxiliary Control System

open access: yesEnergies, 2019
The water hammer can cause great risks in water supply pipe systems. A surge tank is a kind of general water hammer control device. In order to improve the behavior of the surge tank, a self-adaptive auxiliary control (SAC) system was proposed in this ...
Wuyi Wan   +3 more
doaj   +1 more source

Development of Smoothed Particle Hydrodynamics based water hammer model for water distribution systems

open access: yesEngineering Applications of Computational Fluid Mechanics, 2023
Smoothed Particle Hydrodynamics (SPH) method is used to solve water hammer equations for pipeline systems due to its potential advantages of easily capturing column separation and slug impact.
Wenke Song   +6 more
doaj   +1 more source

Modeling and analysis of water-hammer in coaxial pipes

open access: yes, 2014
The fluid-structure interaction is studied for a system composed of two coaxial pipes in an annular geometry, for both homogeneous isotropic metal pipes and fiber-reinforced (anisotropic) pipes.
Bitter, Neal, Cesana, Pierluigi
core   +1 more source

Shock-induced collapse of a gas bubble in shockwave lithotripsy [PDF]

open access: yes, 2008
The shock-induced collapse of a pre-existing nucleus near a solid surface in the focal region of a lithotripter is investigated. The entire flow field of the collapse of a single gas bubble subjected to a lithotripter pulse is simulated using a high ...
Colonius, Tim, Johnsen, Eric
core   +2 more sources

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