Rigid water column model for simulating the emptying process in a pipeline using pressurized air
This paper presents a mathematical model for analyzing the emptying process in a pipeline using pressurized air. The rigid water column model (RWCM) is used to analyze the transient phenomena that occur during the emptying of the pipeline. The air-water interface is also computed in the proposed mod...
- Autores:
- Tipo de recurso:
- Fecha de publicación:
- 2018
- Institución:
- Universidad Tecnológica de Bolívar
- Repositorio:
- Repositorio Institucional UTB
- Idioma:
- eng
- OAI Identifier:
- oai:repositorio.utb.edu.co:20.500.12585/8886
- Acceso en línea:
- https://hdl.handle.net/20.500.12585/8886
- Palabra clave:
- Air-water interface
Pipelines emptying
Pressurized air
Transient flow
Water distribution system
Air
Flow of water
Gages
Hydraulics
Phase interfaces
Pipelines
Polyvinyl chlorides
Transition flow
Water distribution systems
Water supply systems
Air water interfaces
Computer modeling programs
High pressure air
Internal diameters
Pressurized air
Transient flow
Transient phenomenon
Water column models
Rivers
Air-water interaction
Boundary condition
Computer simulation
Flow field
Hydraulics
Interface
Numerical model
Pipe flow
Pipeline
Pressure field
Transient flow
Water column
- Rights
- restrictedAccess
- License
- http://creativecommons.org/licenses/by-nc-nd/4.0/
| Summary: | This paper presents a mathematical model for analyzing the emptying process in a pipeline using pressurized air. The rigid water column model (RWCM) is used to analyze the transient phenomena that occur during the emptying of the pipeline. The air-water interface is also computed in the proposed model. The proposed model is applied along a 271.6-m-long PVC-steel pipeline with a 232-mm internal diameter. The boundary conditions are given by a high-pressure air tank at the upstream end and a manual butterfly valve at the downstream end. The solution was carried out in a computer modeling program. The results show that comparisons between both the computed and measured water flow oscillations and gauge pressures are very similar; hence, the model can effectively simulate the transient flow in this system. In addition, the results indicate that the proposed model can predict both the water flow and gauge pressure better than previous models. © 2018 American Society of Civil Engineers. |
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