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Head-driven simulation of water supply networks

Tabesh, M. and Tanyimboh, T. and Burrows, R. (2002) Head-driven simulation of water supply networks. International Journal of Engineering, 15 (1). pp. 11-22.

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Abstract

Most network simulation models currently used in engineering practice are based on the conventional demand driven analysis (DDA), which assumes that nodal consumptions are fixed irrespective of the network pressure. Therefore, the DDA method is valid under normal conditions when the pressure can be expected to be adequate to satisfy the predetermined demands. If the operation of the system is simulated under pressure-critical conditions, the relationship between pressure and outflow should be taken into account if the simulation results are to be realistic. To address this issue, some researchers and have referred to the necessity of considering the pressure dependency of nodal consumption in network simulation models. In the numerical example illustrated in this paper, the Head Driven Analysis (HDA) method and T.T. Tanyimboh, B. Tahar and A.B. Templeman, Pressure-driven modelling of water distribution systems, Water Sci Technol - Water Supply 3 (2003) (1-2), pp. 255-262. was used to calculate the available flow for the reliability calculations.