Abstract
An Advection-Dispersion-Reaction model, ADRNET, is developed to perform dynamic water quality simulation in complex pipe networks. The network hydraulic functions in the EPANET toolkit are incorporated and used as hydraulic engine to simulate the extended period pipes flows in ADRNET based on the time-averaged stochastic demands. An Eulerian-Lagrangian scheme is combined with a numerical Green's Function technique to numerically solve the ADR equation efficiently in network conditions. Verification with analytical solution shows that ADRNET achieves excellent performances of numerical convergence and stability. ADRNET is applied to an all-pipes network with stochastic water demands to compare against results obtained by EPANET advection-reaction water quality model and field observations. Both models achieve similar results at locations where turbulent flows prevail. However, the ADRNET provides better agreement with field observations than EPANET at locations where laminar flows dominate. The ADRNET proves to be a valuable tool for managing water quality practice in water distribution network. This paper was presented at the 8th Annual Water Distribution Systems Analysis Symposium which was held with the generous support of Awwa Research Foundation (AwwaRF).
Published Version
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