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Civil-Comp Proceedings
ISSN 1759-3433
CCP: 50
INNOVATION IN COMPUTER METHODS FOR CIVIL AND STRUCTURAL ENGINEERING
Edited by: B.H.V. Topping and M.B. Leeming
Paper IX.3

Neural Networks for Hydraulic Analysis of Water Distributions Systems

C. Xu*, F. Bouchart# and I. Goulter*

*Department of Civil Engineering and Building, Central Queensland University, Rockhampton, Australia
#Department of Civil and Offshore Engineering, Heriot-Watt University, Edinburgh, United Kingdom

Full Bibliographic Reference for this paper
C. Xu, F. Bouchart, I. Goulter, "Neural Networks for Hydraulic Analysis of Water Distributions Systems", in B.H.V. Topping, M.B. Leeming, (Editors), "Innovation in Computer Methods for Civil and Structural Engineering", Civil-Comp Press, Edinburgh, UK, pp 129-136, 1997. doi:10.4203/ccp.50.9.3
Abstract
A new approach to solving hydraulic networks using recurrent neural network concepts is proposed. The network equilibrium flow problem is first formulated in this new approach as an optimisation problem which minimises a modified content function subject to constraints on flow continuity at each node. This constrained optimisation is then transformed into an unconstrained optimisation using the Augmented Lagrange Multiplier method. The derivation of the cost function enables the minimisation problem to be transformed into a set of ordinary differential equations which can be implemented using artificial neural networks (ANNs), namely Gradient-type Hopfield neural networks. The performance of the neural network-based hydraulic solver is demonstrated by computer simulation of an example network.

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