Experimental study of water hammer-induced forces and deformations in dry pipe fire protection systems

Malesińska, Agnieszka

doi:10.1016/j.firesaf.2015.02.014

Cited by 5 publications

(8 citation statements)

References 3 publications

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“…This paper presents and improves in detail the study which was simply presented in the article by Malesinska. 2 The draft of the test stand concerned the simple scheme of a fire protection system, consisting only of the distribution pipe and one straight pipe (made up of three different diameters), armed with three nozzles. A simple geometric scheme allowed for an initial analysis and identification of phenomena accompanying the hydraulic shock wave propagation.…”

Section: Experimental Facility In Laboratorymentioning

confidence: 99%

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Displacements of the pipe system caused by a transient phenomenon using the dynamic forces measured in the laboratory

Malesińska

Rogulski

Puntorieri

et al. 2018

Measurement and Control

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Background: When transporting liquids, in particularly over long distances, dynamic forces in the system can present a risk. The larger the system size, and the greater the pressure, the more harmful the impact is of such forces. Water is transported in this way for domestic, industrial, and fire-fighting purposes. One of the impulses of dynamic force application may be the transition of the pressure wave in the water hammer. Methods: In this paper, the results of measured dynamic forces and associated displacements recorded on the model caused by transient flow conditions are presented. For measured forces, the displacements of the pipe were also calculated by using the oscillation motion equations. Force measurements and displacement analyses were carried out in laboratory on the model of a simple fire protection system equipped with three nozzles. Results and Conclusions: The measurement results and calculations were used to calibrate a mathematical model created using MATLAB software.

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Section: Experimental Facility In Laboratorymentioning

confidence: 99%

“…If not controlled, it can yield the following results: damage to pipes, fittings, and valves, which in turn causes leaks and life shortening of the system. 2…”

Section: Introductionmentioning

confidence: 99%

Displacements of the pipe system caused by a transient phenomenon using the dynamic forces measured in the laboratory

Malesińska

Rogulski

Puntorieri

et al. 2018

Measurement and Control

Self Cite

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“…They measured CIWH in a wide range of steam pressure with cold water temperature and mass flow rate measured very accurately. AgnieszkaMalesinska [2] investigated forces and displacement induced by water hammer also he create mathematical model in matlab software and they used that model for determination of dynamic forces. He carried out this whole process in two steps.…”

Section: Lterature Reviewmentioning

confidence: 99%

“…It is used to measure water hammer impact in single and two phase flow. AgnieszkaMalesinska [2] Pressure gauge and Dynamometer…”

Section: Lterature Reviewmentioning

confidence: 99%

Water Hammer in Engineering Application: A Review

Jadhav¹

2017

IOSR JMCE

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“…One of the elements that influences the water transport is the water supply. Water for drinking, irrigation and for fire-fighting [7] purposes is often transported over long distances, through piping systems of considerable geometrical dimensions. Such piping systems can be susceptible to the formation of fast, changeable phenomena.…”

Section: Introductionmentioning

confidence: 99%

Use of equivalent celerity to estimate maximum pressure increase in serial pipes during water hammer - numerical simulations in MATLAB

Malesińska¹,

Rogulski²,

Puntorieri³

et al. 2018

Int. J. CMEM

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Pipe lines are useful for transporting water for drinking, irrigation and for fire-ing over long distances, this pipe lines are called "Transmission line" and are used to carry conveying raw or treated water from a well field or remote storage (large lake, reservoir, etc.,) facility to a treatment plant and/or distribution storage tank. In water-carrying piping systems, dangerous phenomena may occur. One such phenomenon is water hammer. The water hammer has always been an area of study, which has captivated the minds of researchers due to its complex and challenging phenomena. Modeling the phenomenon in real conditions is extremely difficult. Due to the dimensions of the piping systems, conducting research at real scales is impossible. However, thanks to the development of numerical methods, the study of water hammer and its effects can be performed using simulation programs. Unfortunately, the simulation results are not always consistent with the actual course of the phenomenon. One of the parameters that describes the nature of the course of a water hammer is the velocity of propagation of the pressure wave, c, which is called celerity. The transient surge pressure, p, may be calculated from the pressure celerity c, and the sudden change in fluid flow velocity, ∆ v. In a piping system, the value of the pressure wave celerity is not equal to the individual celerity, c, for a single pipeline. Therefore for piping systems for ∆p calculations the equivalent celerity shell be used. This article presents value of the equivalent celerity calculated from equations derived using linear analysis of natural vibrations of the system. For implement of the equations, an algorithm in MAT-LAB has been developed that allows one to easily calculate the equivalent celerity, c e , for N pipelines connected in series with varying diameter, length and material composition.

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Experimental study of water hammer-induced forces and deformations in dry pipe fire protection systems

Cited by 5 publications

References 3 publications

Displacements of the pipe system caused by a transient phenomenon using the dynamic forces measured in the laboratory

Displacements of the pipe system caused by a transient phenomenon using the dynamic forces measured in the laboratory

Water Hammer in Engineering Application: A Review

Use of equivalent celerity to estimate maximum pressure increase in serial pipes during water hammer - numerical simulations in MATLAB

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