A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Two-dimensional simulation of emptying manoeuvres in water pipelines with admitted air
This study examines the impact of sub-atmospheric pressures in water pipelines during emptying manoeuvres with air admitted. Previous research has looked at this issue but has not studied it in detail. This research presents a two-dimensional model using the OpenFOAM software to analyse different emptying manoeuvres in a single pipeline with entrapped air. The results show the sensitivity of the ball valve opening percentage, which show that absolute pressure drop can reduce to 23% for each 5% of ball valve opening percentage. The influence of the size of the entrapped air pocket and different air-admission orifices was also analysed. The numerical model showed that the selection of the percentage and times of opening drainage valves in pipelines with air-admission orifices is crucial in controlling sub-atmospheric pressure conditions. Finally, this study demonstrates the ability of the two-dimensional model to show the sensitivity of hydraulic drainage parameters in pipelines with entrapped air.
Two-dimensional simulation of emptying manoeuvres in water pipelines with admitted air
This study examines the impact of sub-atmospheric pressures in water pipelines during emptying manoeuvres with air admitted. Previous research has looked at this issue but has not studied it in detail. This research presents a two-dimensional model using the OpenFOAM software to analyse different emptying manoeuvres in a single pipeline with entrapped air. The results show the sensitivity of the ball valve opening percentage, which show that absolute pressure drop can reduce to 23% for each 5% of ball valve opening percentage. The influence of the size of the entrapped air pocket and different air-admission orifices was also analysed. The numerical model showed that the selection of the percentage and times of opening drainage valves in pipelines with air-admission orifices is crucial in controlling sub-atmospheric pressure conditions. Finally, this study demonstrates the ability of the two-dimensional model to show the sensitivity of hydraulic drainage parameters in pipelines with entrapped air.
Two-dimensional simulation of emptying manoeuvres in water pipelines with admitted air
Paternina-Verona, Duban A. (author) / Flórez-Acero, Luis C. (author) / Coronado-Hernández, Oscar E. (author) / Espinoza-Román, Héctor G. (author) / Fuertes-Miquel, Vicente S. (author) / Ramos, Helena M. (author)
Urban Water Journal ; 20 ; 801-812
2023-08-09
12 pages
Article (Journal)
Electronic Resource
Unknown
Improved One-Dimensional Models for Rapid Emptying and Filling of Pipelines
| BASE | 2016
Improved one-dimensional models for rapid emptying and filling of pipelines
| BASE | 2016
Calculation of Emptying Inclined Pipelines with Consideration of Unsteady-State Effects
| British Library Online Contents | 1994
Calculation of emptying inclined pipelines with consideration of unsteady-state effects
| Springer Verlag | 1994
Calculation of emptying inclined pipelines with consideration of unsteady-state effects
| Online Contents | 1994