Author(s)

V.G.Tzatchkov, F.I.Arreguin, A.A.Aldama, S.G.Buchberger, Y.Lee

Abstract

Advection-dispersion transport in water distribution networks with intermittent flow V.G. Tzatchkov*, A.A. Aldama*, F.I. Arregum\ S.G. Buchberger^ & Y.-H. Lee^ ^Institute Mexicano de Tecnologia del Agua, Mexico ^University of Cincinnati, USA Abstract Predictions of known advection-reaction models for one-dimensional transport and decay of constituents in drinking water distribution networks (such as EPANET) tend to be less reliable in pipes with low flow velocity where dispersion may dominate. An Eulerian-Lagrangian advection-dispersion-reaction model (IMTARED) has been developed to accurately predict the concentration evolution in pipes, especially those with laminar flow conditions. This paper extends the proposed advection-dispersion-reaction model to include dispersion in intermittent laminar flow. Intermittent laminar flow conditions are quite common in dead-end zones of water distribution systems. The stop-and-go nature of intermittent flow, however, perpetuates the initial

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