Author(s): Stefania Piazza; Mariacrocetta Sambito; Gabriele Freni And Orazio Giustolisi

Linked Author(s): Gabriele Freni, Orazio Giustolisi

Keywords: 1D advective-dispersive model damping coefficient delay coefficient water quality

Abstract: Water distribution systems are complex and vulnerable, with water quality often compromised by contaminants entering through reservoirs or pipe cracks, particularly in intermittent services. Effective monitoring requires appropriate numerical models to simulate water quality, as this influences the placement of sensors. Traditional models, such as advective-reactive or one-dimensional advective-dispersive-reactive models, are widely used for their computational efficiency but sacrifice accuracy. Two-dimensional advective-dispersive models, however, offer a better representation of contaminant transport processes. The Peclet number helps assess the dominance of advective versus dispersive processes in one-dimensional models. Still, it is less applicable to two-dimensional systems due to the role of pipe length in diffusive-dispersive processes. Recent research introduced a new indicator, T to distinguish between advective and dispersive behaviours in water networks, while considering efficiency and error in contaminant modelling. The present study proposes a correction coefficient to enable one-dimensional models to maintain the accuracy of two-dimensional models, by applying these models to a linear pipeline using logarithmic forms to scale two-dimensional results to one-dimensional, achieving high efficiency.

DOI:

Year: 2025