Chapter
Apr 26, 2012
Enhanced Global Gradient Algorithm: A General Formulation
Authors: L. Berardi [email protected], O. Giustolisi [email protected], and E. Todini [email protected]Author Affiliations
Publication: World Environmental and Water Resources Congress 2009: Great Rivers
Abstract
The behaviour of a looped water distribution network, operating under pressure in steady flow conditions, can be modelled by imposing mass and momentum conservation. When distributed demands along the pipes are present, they tend to be represented as lumped withdrawals at the pipes ending nodes. Although such simplification preserves mass balance, it might cause significant head loss errors which may lead to inconsistent results. Giustolisi and Todini (2008) recently proposed a correction scheme within a modified Global Gradient Algorithm (GGA) under the common assumptions of Darcy-Weisbach head loss formula and pipe friction factors independent from the flow regime. This paper provides an extension of the mentioned approach to any generic monomial head loss formula, so it can be easily incorporated into existing commercial water distribution network simulators.
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© 2009 American Society of Civil Engineers.
History
Published online: Apr 26, 2012
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ASCE Technical Topics:
- Algorithms
- Continuum mechanics
- Dynamics (solid mechanics)
- Engineering fundamentals
- Engineering mechanics
- Head (fluid mechanics)
- Head loss (fluid mechanics)
- Hydraulic engineering
- Hydraulics
- Infrastructure
- Mathematics
- Pipeline systems
- Pipes
- Pressure (type)
- Pressure distribution
- Pressure pipes
- Solid mechanics
- Water and water resources
- Water conservation
- Water management
- Water policy
- Water pressure
- Water supply
- Water supply systems
Authors
Affiliations
Technical University of Bari, Engineering Faculty of Taranto, Department of Civil and Environmental Engineering, viale del Turismo 8, Taranto, Italy;. E-mail: [email protected]
Technical University of Bari, Engineering Faculty of Taranto, Department of Civil and Environmental Engineering, viale del Turismo 8, Taranto, Italy;. E-mail: [email protected]
Department of Earth and Geo-Environmental Sciences, University of Bologna, Via Zamboni, 67, Bologna, Italy;. E-mail: [email protected]
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