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DISCRETE VOLUME-ELEMENT METHOD FOR NETWORK WATER- QUALITY MODELS
Citation:
Rossman*, L A., P. F. Boulos, AND T. Altman. DISCRETE VOLUME-ELEMENT METHOD FOR NETWORK WATER- QUALITY MODELS. JOURNAL OF WATER RESOURCES PLANNING AND MANAGEMENT. American Society of Civil Engineers (ASCE), Reston, VA, 119(5):505-517, (1993).
Impact/Purpose:
information
Description:
An explicit dynamic water-quality modeling algorithm is developed for tracking dissolved substances in water-distribution networks. The algorithm is based on a mass-balance relation within pipes that considers both advective transport and reaction kinetics. Complete mixing of material is assumed at pipe junctions and storage tanks. The algorithm automatically selects a pipe-segmentation scheme and computational time step that satisfies conservation of mass and seeks to minimize numerical dispersion. In contrast to previous water-quality models, there is no need to first find unique flow paths through the network. The resulting method is both robust and efficient, and can be readily applied to all types of nertwork configurations and dynamic hydraulic conditions. The applicability of the method is demonstrated using an example pipe-distribution network. Enhancement of distribution-system wateer-quality management i s principal benefit of the methodology.
