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| 1 | Optimal operation of water distribution networks under local pipe failures显示文摘The optimal operation of water distribution networks under local pipe failures, such as water main breaks, was proposed. Based on a hydraulic analysis and a simulation of water distribution networks, a macroscopic model for a network under a local pipe failure was established by the statistical regression. After the operation objectives under a local pipe failure were determined, the optimal operation model was developed and solved by the genetic algorithm. The program was developed and examined by a city distribution network. The optimal operation alternative shows that the electricity cost is saved approximately 11%, the income of the water corporation is increased approximately 5%, and the pressure in the water distribution network is distributed evenly to ensure the network safe operation. Therefore, the proposed method for optimal operation under local pipe failure is feasible and cost-effective. | 田一梅 G.Y.FU 迟海燕 刘烨 | 2007 | Journal of Central South University of Technology2007，14，3： | 3 |
| 2 | Microstructure and Mechanical Property of Hot-Rolled Mg-2Ag Alloy Prepared with Multi-pass Rolling显示文摘A conventional multi-pass rolling is designed to form different microstructures in a Mg-2Ag alloy.The relationship between microstructure and mechanical property is investigated.The result shows that twin-induced nucleation plays a prominent role for the dynamic recrystallization(DRX)behavior of the rolled Mg-2Ag alloys.The DRXed grains distributed around elongated grains have random orientations but gradually turn to the concentrated orientation with strong basal texture when the rolling pass increases.The yield strength and ultimate tensile strength of rolled Mg-2Ag alloy gradually increase with increasing rolling pass.The elongation of rolled sample is gradually improved when the rolling pass increases from one to three,while a significant drop of elongation shows in the four-pass rolling sample.The strong basal texture,refined grains,high-density dislocations,and Ag segregation along grain boundaries are suggested to play a prominent role for enhancing the strength of Mg-Ag alloys,while the low-density dislocations,homogeneously fine-grained microstructure,and weak texture are critical for improving the ductility. | H.Zhang H.L.Hao G.Y.Fu B.S.Liu R.G.Li R.Z.Wu H.C.Pan | 2023 | Acta Metallurgica Sinica(English Letters)2023，36，2： | 1 |
| 3 | Simulation of Fusion Plasmas:Current Status and Future Direction显示文摘 | D.A.Batchelor M.Beck A.Becoulet R.V.Budny C.S.Chang P.H.Diamond J.Q.Dong G.Y.FU A.Fukuyama T.S.Hahm D.E.Keyes Y.Kishimoto S.Klasky L.L.Lao K.Li Z.Lin B.Ludaescher J.Manickam N.Nakajima T.Ozeki N.Podhorszki W.M.Tang M.A.Vouk R.E.Waltz S.J.Wang H.R.Wilson X.Q.Xu M.Yagi F.Zonca | 2007 | Plasma Science and Technology2007，9，3： | 0 |
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