A computational fluid dynamics evaluation of a pneumatic safety relief valve

W.M. Dempster, W. Elmayyah

Research output: Contribution to conferencePaper

Abstract

Safety relief valves are well established components preventing catastrophic failure of pressurised systems when non-normal operating conditions occur. However, it is only recently with developments in CFD techniques that the capability to predict the complex flow conditions occurring in the valves has been possible resulting in only limited studies being found in the literature. This paper presents experimental and theoretical investigations applied to a safety relief valve designed for the refrigeration industry but extended here to consider pneumatic systems since air is the compressible fluid. The discharge flow rate and valve forces are determined both theoretically and experimentally for different valve lift conditions and related to the detailed flow conditions (pressure, temperature and Mach number) in the valve predicted by CFD techniques. The CFD code FLUENT has been used with a two dimensional axisymmetric RANS approach using the k-İ turbulent model to predict the highly compressible flow through the valve. The model has been validated by comparison with experimental measurements and the predicted results show good agreement, providing confidence in the use of CFD techniques for valve design and improvement.

Conference

Conference13th International Conference on Applied Mechanics and Mechanical Engineering (AMME-13)
CityCairo, Egypt
Period27/05/0829/05/08

Fingerprint

Safety valves
Pressure relief valves
Computational Fluid Dynamics
Pneumatics
Computational fluid dynamics
Safety
Evaluation
Predict
FLUENT
Compressible flow
Compressible Fluid
Compressible Flow
Refrigeration
Discharge (fluid mechanics)
Flow Rate
Mach number
Confidence
Flow rate
Industry
Fluids

Keywords

  • pneumatics
  • safety relief valves
  • computational fluid dynamics
  • compressible flow

Cite this

Dempster, W. M., & Elmayyah, W. (2008). A computational fluid dynamics evaluation of a pneumatic safety relief valve. 92-106. Paper presented at 13th International Conference on Applied Mechanics and Mechanical Engineering (AMME-13), Cairo, Egypt, .
Dempster, W.M. ; Elmayyah, W. / A computational fluid dynamics evaluation of a pneumatic safety relief valve. Paper presented at 13th International Conference on Applied Mechanics and Mechanical Engineering (AMME-13), Cairo, Egypt, .14 p.
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title = "A computational fluid dynamics evaluation of a pneumatic safety relief valve",
abstract = "Safety relief valves are well established components preventing catastrophic failure of pressurised systems when non-normal operating conditions occur. However, it is only recently with developments in CFD techniques that the capability to predict the complex flow conditions occurring in the valves has been possible resulting in only limited studies being found in the literature. This paper presents experimental and theoretical investigations applied to a safety relief valve designed for the refrigeration industry but extended here to consider pneumatic systems since air is the compressible fluid. The discharge flow rate and valve forces are determined both theoretically and experimentally for different valve lift conditions and related to the detailed flow conditions (pressure, temperature and Mach number) in the valve predicted by CFD techniques. The CFD code FLUENT has been used with a two dimensional axisymmetric RANS approach using the k-İ turbulent model to predict the highly compressible flow through the valve. The model has been validated by comparison with experimental measurements and the predicted results show good agreement, providing confidence in the use of CFD techniques for valve design and improvement.",
keywords = "pneumatics, safety relief valves, computational fluid dynamics, compressible flow",
author = "W.M. Dempster and W. Elmayyah",
year = "2008",
month = "5",
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language = "English",
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note = "13th International Conference on Applied Mechanics and Mechanical Engineering (AMME-13) ; Conference date: 27-05-2008 Through 29-05-2008",

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Dempster, WM & Elmayyah, W 2008, 'A computational fluid dynamics evaluation of a pneumatic safety relief valve' Paper presented at 13th International Conference on Applied Mechanics and Mechanical Engineering (AMME-13), Cairo, Egypt, 27/05/08 - 29/05/08, pp. 92-106.

A computational fluid dynamics evaluation of a pneumatic safety relief valve. / Dempster, W.M.; Elmayyah, W.

2008. 92-106 Paper presented at 13th International Conference on Applied Mechanics and Mechanical Engineering (AMME-13), Cairo, Egypt, .

Research output: Contribution to conferencePaper

TY - CONF

T1 - A computational fluid dynamics evaluation of a pneumatic safety relief valve

AU - Dempster, W.M.

AU - Elmayyah, W.

PY - 2008/5/27

Y1 - 2008/5/27

N2 - Safety relief valves are well established components preventing catastrophic failure of pressurised systems when non-normal operating conditions occur. However, it is only recently with developments in CFD techniques that the capability to predict the complex flow conditions occurring in the valves has been possible resulting in only limited studies being found in the literature. This paper presents experimental and theoretical investigations applied to a safety relief valve designed for the refrigeration industry but extended here to consider pneumatic systems since air is the compressible fluid. The discharge flow rate and valve forces are determined both theoretically and experimentally for different valve lift conditions and related to the detailed flow conditions (pressure, temperature and Mach number) in the valve predicted by CFD techniques. The CFD code FLUENT has been used with a two dimensional axisymmetric RANS approach using the k-İ turbulent model to predict the highly compressible flow through the valve. The model has been validated by comparison with experimental measurements and the predicted results show good agreement, providing confidence in the use of CFD techniques for valve design and improvement.

AB - Safety relief valves are well established components preventing catastrophic failure of pressurised systems when non-normal operating conditions occur. However, it is only recently with developments in CFD techniques that the capability to predict the complex flow conditions occurring in the valves has been possible resulting in only limited studies being found in the literature. This paper presents experimental and theoretical investigations applied to a safety relief valve designed for the refrigeration industry but extended here to consider pneumatic systems since air is the compressible fluid. The discharge flow rate and valve forces are determined both theoretically and experimentally for different valve lift conditions and related to the detailed flow conditions (pressure, temperature and Mach number) in the valve predicted by CFD techniques. The CFD code FLUENT has been used with a two dimensional axisymmetric RANS approach using the k-İ turbulent model to predict the highly compressible flow through the valve. The model has been validated by comparison with experimental measurements and the predicted results show good agreement, providing confidence in the use of CFD techniques for valve design and improvement.

KW - pneumatics

KW - safety relief valves

KW - computational fluid dynamics

KW - compressible flow

M3 - Paper

SP - 92

EP - 106

ER -

Dempster WM, Elmayyah W. A computational fluid dynamics evaluation of a pneumatic safety relief valve. 2008. Paper presented at 13th International Conference on Applied Mechanics and Mechanical Engineering (AMME-13), Cairo, Egypt, .