Investigation of a new shock damper system efficiency in reducing water hammer excess pressure due to the sudden closure of a control valve

Bostan, Mohammad; Akhtari, Ali Akbar; Bonakdari, Hossein; Gharabaghi, Bahram; Noori, Omid

doi:10.1080/09715010.2018.1479665

Cited by 9 publications

(3 citation statements)

References 20 publications

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“…Despite the ordinary air chambers, this device works hydraulically without the need for a compressor. Its performance was tested and experimental validation of numerical simulation has been done [26]. Thereafter, considering maximum safety as an objective function, an optimization problem was defined for designing it [27]; However, one of the most important parameters in the design of shock damper is the construction cost which was not considered.…”

Section: Shock Damper and Optimum Designmentioning

confidence: 99%

“…It acts as a vibrating system with a degree of freedom (vertically) to control positive and negative pressure waves resulted from water hammer. If a shock damper is installed in the system, during the water hammer, it can dampen the transient energy in a safe way using a few oscillations; more details about its mechanism can be found in the corresponding papers [10,26,27].…”

Section: Introduction To Shock Dampermentioning

confidence: 99%

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Developing multi-objective optimization model with conflicting goals to improve the surge protection devices design for water hammer

Bostan

Amini

2022

Scientia Iranica

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In this study, a Multi-objective Optimization Model (MOM) is developed and solved for the optimum design of surge protection devices (including air chamber and shock damper) with conflicting goals. The shock damper is a new type of surge tank invented by researchers. For the first time, the design parameters of the shock damper as decision variables are raised in a MOM problem, and results are benchmarked with solving the model for the air chamber as well.Method of characteristics (MOC) is chosen for the numerical solution of water hammer PDE's and its system of equations for interior and boundary nodes are used as constraints of the optimization model. The conflicting criteria of the MOM are functions of: safety in the system and installation cost of protection devices. In the following by using the weight coefficients and normalized objective functions obtained by dividing each of the mentioned functions by the maximum potential values of them, the resulting problem is solved by Genetic Algorithm (GA).The results, while investigated conceptually, show the significant improvement of multiobjective design in the performance and cost-saving in protection devices and the better function of shock damper regarding both criteria.

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Section: Shock Damper and Optimum Designmentioning

confidence: 99%

Section: Introduction To Shock Dampermentioning

confidence: 99%

Developing multi-objective optimization model with conflicting goals to improve the surge protection devices design for water hammer

Bostan

Amini

2022

Scientia Iranica

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“…In pressurized systems, sudden intentional or accidental changes in ow rates trigger hydraulic transient conditions, commonly known as water hammer, representing one of the most destructive hydrodynamic phenomena [2], [3]. This phenomenon is practically linked to actions such as pump startup, pump failure, rapid valve closure, and pipe rupture, making it an unavoidable aspect of hydraulic systems [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Hydraulic Transient attenuation by HDPE backward configuration Technique

Mery,

EKaid

2023

Preprint

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Hydraulic transients pose a significant threat to pressurized conduits, and their occurrence is commonplace in industrial pipelines throughout their operational lifespan. The potential for catastrophic damage resulting from hydraulic transient events has compelled researchers to explore effective techniques for mitigating their severity. This paper presents the findings of an experimental study aimed at investigating the efficacy of employing a high-density polyethylene (HDPE) bypass as a hydraulic transient mitigation strategy. The configured HDPE bypass is designed to allow backward flows while restraining forward flows. The study encompasses various transient conditions, with measurements recorded at different locations along the pipeline. The investigated hydraulic transient scenarios include pump trip-induced transients, end valve closure transients, and simultaneous pump and valve closure-induced transients. Furthermore, the performance of the HDPE backward configuration technique is compared with that of the air vessel technique. In conclusion, the experiments reveal that the HDPE backward configuration technique proves to be an effective strategy for attenuating transient pressure waves in hydraulic systems. Notably, the HDPE technique outperformed the air vessel technique in several experimental conditions. Additionally, the combined use of the HDPE and air vessel techniques demonstrated superior performance compared to each technique individually across all measured locations and under various transient conditions.

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Optimal Design for Shock Damper with Genetic Algorithm to Control Water Hammer Effects in Complex Water Distribution Systems

Bostan

Akhtari

Bonakdari

et al. 2019

Water Resour Manage

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Investigation of a new shock damper system efficiency in reducing water hammer excess pressure due to the sudden closure of a control valve

Cited by 9 publications

References 20 publications

Developing multi-objective optimization model with conflicting goals to improve the surge protection devices design for water hammer

Developing multi-objective optimization model with conflicting goals to improve the surge protection devices design for water hammer

Hydraulic Transient attenuation by HDPE backward configuration Technique

Optimal Design for Shock Damper with Genetic Algorithm to Control Water Hammer Effects in Complex Water Distribution Systems

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