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

Xueguan Song, Lei Cui, Maosen Cao, Wenping Cao, Youngchul Park, William Dempster

Research output: Contribution to journalArticle

39 Citations (Scopus)

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 computational fluid dynamics (CFD) techniques including moving mesh capabilities, multiple domains and valve
piston motion using the CFX Expression Language (CEL). With a geometrically accurate CFD model of the SRV and the vessel, the complete transient process of the system from valve opening to valve closure is simulated. A detailed picture of the compressible fluid flowing through the SRV is obtained, including
small-scale flow features in the seat regions. In addition, the flow forces on the disc and the lift are monitored and analyzed and the comparison of the effects of design parameters, are examined; including the adjusting ring position, vessel volume and spring stiffness. Results from the model allow the fluid and
dynamic characteristics of the SRV to be investigated and shows that the model has great potential of assisting engineers in the preliminary design of SRVs, operating under actual conditions which are often found to be difficult to interpret in practice.
LanguageEnglish
Pages407-419
Number of pages12
JournalEnergy Conversion and Management
Volume81
Early online date17 Mar 2014
DOIs
Publication statusPublished - May 2014

Fingerprint

Safety valves
Pressure relief valves
Pressure vessels
Dynamic analysis
Computational fluid dynamics
Fluids
Seats
Numerical models
Dynamic models
Stiffness
Engineers

Keywords

  • safety relief valve
  • pressure vessels
  • blowdown
  • CFD analysis
  • moving mesh analysis

Cite this

Song, Xueguan ; Cui, Lei ; Cao, Maosen ; Cao, Wenping ; Park, Youngchul ; Dempster, William. / A CFD analysis of the dynamics of a direct-operated safety relief valve mounted on a pressure vessel. In: Energy Conversion and Management. 2014 ; Vol. 81. pp. 407-419.
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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 computational fluid dynamics (CFD) techniques including moving mesh capabilities, multiple domains and valvepiston motion using the CFX Expression Language (CEL). With a geometrically accurate CFD model of the SRV and the vessel, the complete transient process of the system from valve opening to valve closure is simulated. A detailed picture of the compressible fluid flowing through the SRV is obtained, includingsmall-scale flow features in the seat regions. In addition, the flow forces on the disc and the lift are monitored and analyzed and the comparison of the effects of design parameters, are examined; including the adjusting ring position, vessel volume and spring stiffness. Results from the model allow the fluid anddynamic characteristics of the SRV to be investigated and shows that the model has great potential of assisting engineers in the preliminary design of SRVs, operating under actual conditions which are often found to be difficult to interpret in practice.",
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A CFD analysis of the dynamics of a direct-operated safety relief valve mounted on a pressure vessel. / Song, Xueguan; Cui, Lei; Cao, Maosen; Cao, Wenping; Park, Youngchul; Dempster, William.

In: Energy Conversion and Management, Vol. 81, 05.2014, p. 407-419.

Research output: Contribution to journalArticle

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T1 - A CFD analysis of the dynamics of a direct-operated safety relief valve mounted on a pressure vessel

AU - Song, Xueguan

AU - Cui, Lei

AU - Cao, Maosen

AU - Cao, Wenping

AU - Park, Youngchul

AU - Dempster, William

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AB - 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 computational fluid dynamics (CFD) techniques including moving mesh capabilities, multiple domains and valvepiston motion using the CFX Expression Language (CEL). With a geometrically accurate CFD model of the SRV and the vessel, the complete transient process of the system from valve opening to valve closure is simulated. A detailed picture of the compressible fluid flowing through the SRV is obtained, includingsmall-scale flow features in the seat regions. In addition, the flow forces on the disc and the lift are monitored and analyzed and the comparison of the effects of design parameters, are examined; including the adjusting ring position, vessel volume and spring stiffness. Results from the model allow the fluid anddynamic characteristics of the SRV to be investigated and shows that the model has great potential of assisting engineers in the preliminary design of SRVs, operating under actual conditions which are often found to be difficult to interpret in practice.

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KW - pressure vessels

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