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

Abstract

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.

Dynamic behaviour of direct spring loaded pressure relief valves: III valves in liquid service

“…Similar concepts were developed by Viel and Imagine (2011) who studied stability with the help of Nyquist plots, and by Beune et al (2012) who calculated flow force versus displacement using more computationally efficient 2D CFD. Further developments in full CFD simulations for liquid service PRVs have been undertaken by various authors showing just how complex the flow field can be, depending on the valve geometry and turbulence model adopted: see Dossena et al (2013); Qian et al (2014); Song et al (2014Song et al ( , 2013; Wu et al (2015). Bazsó and Hős (2012) investigated the need for unsteady CFD for predicting the point of onset of the instability by, comparing 2D simulations with full 3D deforming mesh computations for a simple conical valve body.…”

Numerical Modeling of the Gas Dynamics of the Safety Valve

“…Наиболее полная численная модель исследо-вания газодинамических процессов в предохра-нительном клапане прямого действия представ-лена в [12]. Решение задачи о газодинамических процессах осуществляется в 3D-постановке с использованием пакета ANSYS.…”

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

“…Several recent articles in which the authors were able to reproduce various forms of valve instability using CFD include the works by Song et al (2014); Srikanth and Bhasker (2009);Beune et al (2012); Yonezawa et al (2012); Bazsó and Hős (2012); Wu et al (2015). CFD even allows the accurate predictions of two-phase situations, as in Dempster and Elmayyah (2013) or the analysis of other types of valves, see Qian et al (2014).…”