Modelling incompressible flow in a pressure relief valve

Francis, Jonathan; Betts, P. L.

doi:10.1243/0954408971529575

Cited by 20 publications

(10 citation statements)

References 7 publications

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“…From the 90's, with the development of computational methods, the computational analysis of the complex flows through valves have became more feasible thus leading to substantial research into the operation and design of SRVs [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. For example, Vu and Wang [1] investigated the complex three-dimensional flow field of an oxygen SRV during an incident with CFD (computational fluid dynamics) techniques.…”

Section: Introductionmentioning

confidence: 99%

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A CFD analysis of the dynamics of a direct-operated safety relief valve mounted on a pressure vessel

Song

Cui

Cao

et al. 2014

Energy Conversion and Management

113

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This version is available at https://strathprints.strath.ac.uk/50869/ Strathprints is designed to allow users to access the research output of the University of Strathclyde. Unless otherwise explicitly stated on the manuscript, Copyright © and Moral Rights for the papers on this site are retained by the individual authors and/or other copyright owners. Please check the manuscript for details of any other licences that may have been applied. You may not engage in further distribution of the material for any profitmaking activities or any commercial gain. You may freely distribute both the url (https://strathprints.strath.ac.uk/) and the content of this paper for research or private study, educational, or not-for-profit purposes without prior permission or charge. Abstract:In this study, a numerical model is developed to investigate the fluid and dynamic characteristics of a direct-operated safety relieve valve (SRV). The CFX code has been used to employ advanced Keywords:Direct-operated safety relief valve, pressure vessel, blowdown, CFD, moving mesh Highlights:A dynamic CFD analysis of a direct-operated safety relief valve with moving mesh is presented.Conventional inlet assumption is replaced by a pressure vessel to provide more realistic condition.The whole operation process of the valve from open to closure is monitored and investigated.The authors believe that this is the first time that a complete simulation of a SRV has been published providing detailed insight to the governing flow processes and the ability to accurately quantify valve dynamics and valve performance only previously available using experimental methods.Effects of factors such as vessel volume, adjusting ring position and spring stiffness are compared.

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Section: Introductionmentioning

confidence: 99%

“…Francis and Betts [4,5] studied the pressure distribution on the underside of a commercial SRV disc and identified the critical backpressure ratio when the SRV was subject to choked compressible flow.…”

Section: Introductionmentioning

confidence: 99%

A CFD analysis of the dynamics of a direct-operated safety relief valve mounted on a pressure vessel

Song

Cui

Cao

et al. 2014

Energy Conversion and Management

113

View full text Add to dashboard Cite

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“…A common approach in the literature is to assume quasi-static conditions apply and examine the steady state behavior of the valve: this has been done both experimentally and computationally. Francis and Betts (1997) used the commercial software code FIDAP to predict an axisymmetric incompressible flow pattern inside a PRV. Experimental and simulation results were compared in the pressure distribution and force imposed on the valve disk.…”

Section: Introductionmentioning

confidence: 99%

Experiments and transient simulation on spring-loaded pressure relief valve under high temperature and high pressure steam conditions

Yang

Wang

Dempster³

et al. 2017

Journal of Loss Prevention in the Process Industries

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Reliable performances of high temperature and high pressure operating steam pressure relief valves (HTHP PRVs) are extremely important for the safety of nuclear power plants. It is still a challenge to accurately describe the dynamic performance of HTHP PRVs. In this study, the accuracy of computational fluid dynamics (CFD) based modelling of the transient processes is examined. For one of the HTHP PRVs named DWPRV, the effects of different parameters on the dynamic performance were investigated by combining CFD simulation and experiments. In the simulation, the domain decomposition method (DDM) and the Grid Pre-deformation Method (GPM) were adopted to handle the moving disk geometry and the large mesh deformation. The effect of damping was also studied. It is confirmed that the use of CFD simulation can improve the design and settings of a HTHP PRV in a highly energetic service that is difficult to test due to safety reasons. For the DWPRV, it was found that the maximum flow rate occurs when the curtain area is 1.18 times the throat area. The degree of superheat ranging from 0 C to 100 C has a negligible effect on the performance of DWPRV regardless of the changes in the material mechanical properties with operating temperatures. The reseating pressure increases linearly with the rise in the distance between the upper adjusting ring and the sealing face. The lower adjusting ring exhibits a weak effect on the reseating pressure. For the ratios of rated lift to throat diameter equalling to 0.3 and 0.35, the DWPRV exhibits the higher blowdown for the ratio of 0.3

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“…An introduction of appropriate formal formulas in the process of problem structuration combines complex features of quantity and quality of different levels of detail according to rules of the multidimensional morphological table Partyka, 1984). Decision and morphological tables can be analytically and numerically coded in accordance with the definition and logic of multi-valued decision processes what makes it possible to apply variant way of identifying and classifying information while looking for solutions in the designing process (Filla and Palmberg, 2003;Francis and Betts, 1997;Giergiel, 1990;Kurowski, 2001;Żak and Stefanowski, 1994). The method of minimizing complex partial multi-valued logical functions indicates the degree of importance of construction and exploitation parameters playing the role of logical decision variables (Osiński et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Decision Optimization of Machine Sets Taking Into Consideration Logical Tree Minimization of Design Guidelines

Deptuła¹,

Partyka²

2014

International Journal of Applied Mechanics and Engineering

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The method of minimization of complex partial multi-valued logical functions determines the degree of importance of construction and exploitation parameters playing the role of logical decision variables. Logical functions are taken into consideration in the issues of modelling machine sets. In multi-valued logical functions with weighting products, it is possible to use a modified Quine -McCluskey algorithm of multi-valued functions minimization. Taking into account weighting coefficients in the logical tree minimization reflects a physical model of the object being analysed much better.

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Modelling incompressible flow in a pressure relief valve

Cited by 20 publications

References 7 publications

A CFD analysis of the dynamics of a direct-operated safety relief valve mounted on a pressure vessel

A CFD analysis of the dynamics of a direct-operated safety relief valve mounted on a pressure vessel

Experiments and transient simulation on spring-loaded pressure relief valve under high temperature and high pressure steam conditions

Decision Optimization of Machine Sets Taking Into Consideration Logical Tree Minimization of Design Guidelines

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