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Structural Engineering and Mechanics Volume 58, Number 1, April10 2016 , pages 21-38 DOI: https://doi.org/10.12989/sem.2016.58.1.021 |
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Reliability evaluation of water distribution network considering mechanical characteristics using informational entropy |
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Mostafa Ghanbari Kashani, Mahmood Hosseini and Armin Aziminejad
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| Abstract | ||
| Many studies have been carried out to investigate the important factors in calculating the realistic entropy amount of water distribution networks, but none of them have considered both mechanical and hydraulic characteristics of the networks. Also, the entropy difference in various networks has not been calculated exactly. Therefore, this study suggested a modified entropy function to calculate the informational entropy of water distribution networks so that the order of demand nodes and entropy difference among various networks could be calculated by taking into account both mechanical and hydraulic characteristics of the network. This modification was performed through defining a coefficient in the entropy function as the amount of outflow at each node to all dissipated power in the network. Hence, a more realistic method for calculating entropy was presented by considering both mechanical and hydraulic characteristics of network while keeping simplicity. The efficiency of the suggested method was evaluated by calculating the entropy of some sample water networks using the modified function. | ||
| Key Words | ||
| network reliability; water distribution network; mechanical characteristics; informational entropy; energy dissipation | ||
| Address | ||
| Mostafa Ghanbari Kashani: Department of Civil Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran Mahmood Hosseini: International Institute of Earthquake Engineering and Seismology, (IIEES), Tehran, Iran Armin Aziminejad: Department of Civil Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran | ||