Effect of Uncertainty Demand Location on Transient behavior of WDS

Abstract The effect of demand uncertainty in water distribution systems (WDS) is a key problem, especially for water company assets. The presence or absence of demands, their number, size, and locations significantly affect the functioning of a pipe system and its response to a transient. The validity and the effectiveness of the Lagrangian model is firstly investigated by means of a comparison with a Method of Characteristics model in frictionless systems. Demands locations are stochastically varied to assess the impact of the uncertainty of the geometry of the network on transient propagation. A normal distribution has been used to model the uncertainty of demand location.