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| Hydraulic simulation based on PSO for irrigation projects with low-pressure pipe conveyance |
| GONG Zhihao, JIANG Xiaohong* |
| College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou, Jiangsu 225009, China |
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Abstract The technology of pressurized irrigation with branched networks is promoted on a large scale to alleviate water crisis in China. Continuity equation and energy equation are the basis of hydraulic simulation of pipeline irrigation. In order to simulate the hydraulic performance of pumping station pressurized irrigation projects with low-pressure pipe conveyance, the idea of system optimization is used to develop a mathematical model. In the model, the objective function is to minimize the system′s deviation of water volume and constraints include energy equations of branch pipes. A trial-particle swarm algorithm is proposed to solve the model, which can obtain the actual working points of pumps and the actual discharges of the pipelines and their outlets during the operation of the system. The method was applied to a low-pressure pipe irrigation system in Shanghai and results were compared with those of gradient method. It was proved that TPSA can reduce solving error by 12.3% and solving time by 16.3% at most. The proposed method may help to check the design results of pipe irrigation system, which can meet the development needs of irrigation projects with low-pressure pipe conveyance in China at present.
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Received: 17 March 2020
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