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William Dempster
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Journal Articles

An Improved Positive Displacement Pump Model Accounting for Suction Cavitation

Francesco Rizzuto, Jonatan Corney, William Dempster, Arris Tijsseling
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Research-Article
J. Pressure Vessel Technol. August 2024, 146(4): 041404.
Paper No: PVT-23-1143
https://doi.org/10.1115/1.4065564
Published Online: June 12, 2024
View Article titled, An Improved Positive Displacement Pump Model Accounting for Suction Cavitation
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Topics: Pressure, Pumps, Suction, Cavitation, Valves, Fluids, Pistons
Proceedings Papers

CFD Based Relief Valve Design: Accuracy Requirements and CFD Capability

Steven Taggart, Christopher Doyle, William Dempster
Proc. ASME. PVP2022, Volume 2: Computer Technology and Bolted Joints; Design and Analysis, V002T03A007, July 17–22, 2022
Publisher: American Society of Mechanical Engineers
Paper No: PVP2022-83579
https://doi.org/10.1115/PVP2022-83579
View Paper titled, CFD Based Relief Valve Design: Accuracy Requirements and CFD Capability
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Topics: Computational fluid dynamics, Design, Relief valves, Valves, ASME Boiler and Pressure Vessel Code, Disks, Pressure, Modeling, Uncertainty, Errors
Journal Articles

Dynamic Instability Analysis of a Spring-Loaded Pressure Safety Valve Connected to a Pipe by Using Computational Fluid Dynamics Methods

Fengjie Zheng, Chaoyong Zong, Chao Zhang, Xueguan Song, Fuzheng Qu, William Dempster
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Research-Article
J. Pressure Vessel Technol. August 2021, 143(4): 041403.
Paper No: PVT-20-1081
https://doi.org/10.1115/1.4049697
Published Online: February 11, 2021
View Article titled, Dynamic Instability Analysis of a Spring-Loaded Pressure Safety Valve Connected to a Pipe by Using Computational Fluid Dynamics Methods
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Topics: Disks, Pipes, Pressure, Valves, Springs, Computational fluid dynamics, Platform supply vessels, Safety, Waves
Journal Articles

High-Fidelity Computational Fluid Dynamics Modeling and Analysis of a Pressure Vessel-Pipe-Safety Valve System in Gas Service

Chaoyong Zong, Fengjie Zheng, William Dempster, Dianjing Chen, Xueguan Song
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Research-Article
J. Pressure Vessel Technol. August 2021, 143(4): 041702.
Paper No: PVT-20-1024
https://doi.org/10.1115/1.4049706
Published Online: February 11, 2021
View Article titled, High-Fidelity Computational Fluid Dynamics Modeling and Analysis of a Pressure Vessel-Pipe-Safety Valve System in Gas Service
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Topics: Computational fluid dynamics, Disks, Pipes, Pressure, Safety, Simulation, Valves, Vessels, Flow (Dynamics), Modeling
Proceedings Papers

An Assessment of the Validity of Quasi-Steady Analysis of Pressure Relief Valves

Christopher Doyle, William Dempster, Steven Taggart
Proc. ASME. IMECE2019, Volume 7: Fluids Engineering, V007T08A036, November 11–14, 2019
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2019-10607
https://doi.org/10.1115/IMECE2019-10607
View Paper titled, An Assessment of the Validity of Quasi-Steady Analysis of Pressure Relief Valves
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Topics: Relief valves, Steady state, Transients (Dynamics), Computational fluid dynamics, Engineering simulation, Simulation, Valves, Disks, Pistons, Design
Journal Articles

Computational Fluid Dynamics Analysis of the Flow Force Exerted on the Disk of a Direct-Operated Pressure Safety Valve in Energy System

Chaoyong Zong, Fengjie Zheng, Dianjing Chen, William Dempster, Xueguan Song
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Research-Article
J. Pressure Vessel Technol. February 2020, 142(1): 011702.
Paper No: PVT-19-1128
https://doi.org/10.1115/1.4045131
Published Online: November 22, 2019
View Article titled, Computational Fluid Dynamics Analysis of the Flow Force Exerted on the Disk of a Direct-Operated Pressure Safety Valve in Energy System
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Topics: Computational fluid dynamics, Disks, Flow (Dynamics), Pressure, Simulation, Turbulence, Valves, Safety, Geometry
Journal Articles

A Multidimensional and Multiscale Model for Pressure Analysis in a Reservoir-Pipe-Valve System

Feng Jie Zheng, Chao Yong Zong, William Dempster, Fu Zheng Qu, Xue Guan Song
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Research-Article
J. Pressure Vessel Technol. October 2019, 141(5): 051603.
Paper No: PVT-18-1275
https://doi.org/10.1115/1.4044117
Published Online: July 22, 2019
View Article titled, A Multidimensional and Multiscale Model for Pressure Analysis in a Reservoir-Pipe-Valve System
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Topics: Computational fluid dynamics, Pipes, Pressure, Valves, Reservoirs, Waves, Friction, Transients (Dynamics)
Proceedings Papers

Limitations in the Use of Pressure Scaling for Safety Relief Valve Design

William Dempster, Steven Taggart, Christopher Doyle
Proc. ASME. PVP2018, Volume 3A: Design and Analysis, V03AT03A002, July 15–20, 2018
Publisher: American Society of Mechanical Engineers
Paper No: PVP2018-84737
https://doi.org/10.1115/PVP2018-84737
View Paper titled, Limitations in the Use of Pressure Scaling for Safety Relief Valve Design
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Topics: Design, Pressure, Relief valves, Safety, Valves, Computational fluid dynamics, Flanges, Design methodology, Springs
Proceedings Papers

CFD Prediction of Safety Valve Disc Forces Under Two Phase Flow Conditions

William Dempster, Moftah Alshaikh
Proc. ASME. PVP2018, Volume 3A: Design and Analysis, V03AT03A003, July 15–20, 2018
Publisher: American Society of Mechanical Engineers
Paper No: PVP2018-84745
https://doi.org/10.1115/PVP2018-84745
View Paper titled, CFD Prediction of Safety Valve Disc Forces Under Two Phase Flow Conditions
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Topics: Computational fluid dynamics, Disks, Safety, Two-phase flow, Valves, Dynamics (Mechanics), Flow (Dynamics), Fluids, Modeling, Refrigeration
Proceedings Papers

Surface Roughness 3D Modelling and its Association With Leak Tightness for a Metal-to-Metal Contacting Surface

Ali A. Anwar, William Dempster, Yevgen Gorash, David Nash
Proc. ASME. PVP2017, Volume 4: Fluid-Structure Interaction, V004T04A004, July 16–20, 2017
Publisher: American Society of Mechanical Engineers
Paper No: PVP2017-65404
https://doi.org/10.1115/PVP2017-65404
View Paper titled, Surface Roughness 3D Modelling and its Association With Leak Tightness for a Metal-to-Metal Contacting Surface
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Topics: Leakage, Metals, Surface roughness, Three-dimensional modeling, Computational fluid dynamics, Finite element analysis, Pressure, Computer-aided design, Design, Finite element model
Proceedings Papers

3D Micro-Macro Fluid-Structure Model of Pressure Relief Valve Leak Tightness

Ali A. Anwar, William Dempster, Yevgen Gorash
Proc. ASME. PVP2017, Volume 5: High-Pressure Technology; ASME Nondestructive Evaluation, Diagnosis and Prognosis Division (NDPD); SPC Track for Senate, V005T11A009, July 16–20, 2017
Publisher: American Society of Mechanical Engineers
Paper No: PVP2017-65403
https://doi.org/10.1115/PVP2017-65403
View Paper titled, 3D Micro-Macro Fluid-Structure Model of Pressure Relief Valve Leak Tightness
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Topics: Fluids, Leakage, Relief valves, Metals, Computational fluid dynamics, Design, Finite element analysis, Deformation, Design methodology, Engineers
Proceedings Papers

Microflow Leakage Through the Clearance of a Metal-Metal Seal

Ali A. Anwar, Konstantinos Ritos, Yevgen Gorash, William Dempster, David Nash
Proc. ASME. PVP2016, Volume 7: Operations, Applications and Components, V007T07A021, July 17–21, 2016
Publisher: American Society of Mechanical Engineers
Paper No: PVP2016-63848
https://doi.org/10.1115/PVP2016-63848
View Paper titled, Microflow Leakage Through the Clearance of a Metal-Metal Seal
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Topics: Clearances (Engineering), Leakage, Metals, Pressure, Flow (Dynamics), High pressure (Physics), Relief valves, Boundary-value problems, Disks, Gas flow