Modeling of fluid-induced vibrations and identification of hydrodynamic forces on flow control valves

Mehrzad, Samad; Javanshir, Ilgar; Ranji, Ahmad Rahbar; Taheri, Seyyed Hadi

doi:10.1007/s11771-015-2789-y

Cited by 10 publications

(4 citation statements)

References 21 publications

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“…We should stress though that parallels of the mechanisms of instability we describe through interaction between fluid flow and springmass systems occur in other industrial devices and sectors. Documented cases occur for example in nuclear engineering Galbally et al (2015), steam power Yonezawa et al (2012); Bolin and Engeda (2015), automotive fuel transmission Dazhuan et al (2015) and hydraulic power transmission Mehrzad et al (2015). Similar instabilities can also be present in other valve topologies e.g.…”

Section: Introductionmentioning

confidence: 98%

Dynamic behaviour of direct spring loaded pressure relief valves connected to inlet piping: IV review and recommendations

Hős

Champneys

Paul

et al. 2017

Journal of Loss Prevention in the Process Industries

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General rightsThis document is made available in accordance with publisher policies. Please cite only the published version using the reference above. AbstractRecent progress by a number of different groups and authors is reviewed on the stability properties of direct-spring pressure relief valves connected to pressure vessels with or without piping systems. Various different notions of stability and mechanisms for instability are revealed both in the case of gas and liquid service. It is stressed that it is not the valve itself that is stable or unstable, rather the harmful vibrations arise through interactions between the valve and its surroundings -the inlet piping, the reservoir, and any outlet piping. A distinction is drawn between underlying instability mechanisms and how these may be triggered during transient operations. The purpose of the work is to provide a coherent simplified account that will be of practical use for proposing new operational guidelines and mitigation strategies. Among these various mechanisms, oscillatory instability due to the interaction with a quarter-wave acoustic mode in the inlet piping is argued to be the most important to mitigate.

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Section: Introductionmentioning

confidence: 98%

Dynamic behaviour of direct spring loaded pressure relief valves connected to inlet piping: IV review and recommendations

Hős

Champneys

Paul

et al. 2017

Journal of Loss Prevention in the Process Industries

View full text Add to dashboard Cite

show abstract

“…3,4 Undoubtedly, most researchers focused on the optimization of structural parameters. Mehrzad 5 studied the dynamic characteristics of a control valve under self-excited flow, analyzed the effects of inertia, damping, and geometric parameters on the response speed and stability of the valve, and established the corresponding numerical model. Results demonstrated that with the optimal rounded valve, vibration amplitude can be reduced by an average to 30%.…”

Section: Introductionmentioning

confidence: 99%

Design, failure analysis, and optimization of a high-flow water valve: A case study

Liao

Tao

Zi-sheng

2022

Proceedings of the Institution of Mechanical Engineers, Part E:

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An 800-L/min high-flow water cartridge poppet valve with the commonly used single feed channel was designed to meet the moving speed of the hydraulic powered roof support in the coal mine. Mathematical model was used to explore the dynamic displacement of the valve, and the experimental displacement was measured to verify the accuracy of the simulation value. However, an interesting phenomenon occurred that the experimental opening and closing time of the valve becomes longer and longer with the increase of flow, even vibration appears when the flow is up to 800 L/min, and the simulation error is also getting bigger. To find the reason and solutions, the computational fluid dynamics technology is used. It is discovered that the valve is subjected to radial imbalanced force that is not considered in the initial mathematical model, which leads to big simulation error at high flow condition. Then, the new mathematical model is proposed. The relative simulation error of the response time decreases to 11.7% from 33.3% in the opening process and decreases to 4.6% from 76.9% in the closing process at 800 L/min. A symmetrical dual channel is designed to improve the performance of the valve. The imbalanced force on the dual-channel valve is 63.9% lower than that of the original valve, and the corresponding opening and closing time decreases by 37.5% and 69%, respectively. Furthermore, a double channel valve with auxiliary passage is proposed for super high flow valves. The innovation of this study is correcting the mathematical model by considering the additional radial imbalanced force induced by the asymmetrical flow channel of the valve. It is of great help to successful design of the 800-L/min water directional valve. The case study systematically provides reference for design, failure analysis, and optimization of new products in fluid engineering.

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“…The stable boundary in the parameter space was determined via numerical simulation; the pressure control valve was then optimized by particle swarm optimization algorithm with the stable boundary as a constraint. Samad [8] analyzed the vibration characteristics of control valves of various shapes under the action of fluid exciting force to find that the vibration amplitude of a circular valve is lower than that of a flat or steep valve. Anelina [9] examined the stress and strain characteristics of a steam valve to find that changes in the time variable and non-uniform temperature field alter the local stress leading to metal fatigue.…”

Section: Introductionmentioning

confidence: 99%

Structure optimization design of high-temperature, high-pressure nuclear power valve

Wei

Chang

et al. 2020

DYNA

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The nuclear power valve is an important piece of equipment in any nuclear power system. The finite element method was used in this study to analyze the strength and rigidity of the high-temperature and high-pressure nuclear gate valve. The structural characteristics were optimized as per the parameters that affect the strength of the valve body. Fluid-solid coupling technology was utilized to investigate the temperature, deformation, and stress distributions in the structure. A high stress concentration was observed in the initial design; the maximum equivalent stress exceeded the allowable range. Three optimization methods were deployed in efforts to improve the stress distribution. The stress distribution was found to be more uniform post-optimization and the gate valve structure of all three schemes tested met the relevant stress requirements. The optimal scheme was then determined by further comparison. The results presented here may provide a theoretical reference for the optimization of nuclear power valve designs.

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Modeling of fluid-induced vibrations and identification of hydrodynamic forces on flow control valves

Cited by 10 publications

References 21 publications

Dynamic behaviour of direct spring loaded pressure relief valves connected to inlet piping: IV review and recommendations

Dynamic behaviour of direct spring loaded pressure relief valves connected to inlet piping: IV review and recommendations

Design, failure analysis, and optimization of a high-flow water valve: A case study

Structure optimization design of high-temperature, high-pressure nuclear power valve

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