Genetic Algorithm Based Model for Optimal Selection of Open Channel Design Parameters
Genetic Algorithm Based Model for Optimal Selection of Open Channel Design Parameters
复制标题
基于遗传算法的明渠设计参数优化选择模型
DOI：
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发表时间：
2022
影响因子：
4.3
通讯作者：
A. Bazaraa
中科院分区：
文献类型：
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作者：
Aly K. Salem;Y. E. Imam;Ashraf H. M. Ghanem;A. Bazaraa
明渠是最常用的输水系统之一，用于为不同目的输送水。现有的明渠设计模型主要假设流量均匀，重点关注横截面尺寸，并且通常将横截面尺寸与通道排列和剖面的选择分开。在这项研究中，我们开发了一个用于传输通道综合设计的优化模型。该模型最大限度地减少了土方工程、衬砌、水损失和征地成本的总和；解释不均匀、混合区域的流动；并考虑多种几何和水力约束。该模型使用几个理想化场景进行了验证。通过应用于埃及现有的灌溉输水运河（谢赫扎耶德运河），证明了模型在最大限度地降低实际明渠项目成本方面的潜力。验证方案的结果与渠道剖面和对齐的预期结果相匹配，并复制了渠道横截面设计文献中给出的分析解决方案。将模型应用到谢赫扎耶德运河上，得到了更加优化的设计； OCCD 模型产生的设计替代方案的成本比构建的替代方案低约 27%。
Open channels are one of the most used water conveyance systems for delivering water for different purposes. Existing models for the design of open channels mainly assume uniform flow, focus on cross-section sizing, and generally decouple cross-section sizing from the selection of channel alignment and profile. In this study, we developed an optimization model for a comprehensive design of transmission channels. The model minimizes the sum of costs for earthwork, lining, water losses, and land acquisition; accounts for non-uniform, mixed-regime flow; and considers multiple geometric and hydraulic constraints. The model was validated using several idealized scenarios. The model potential in minimizing the cost of real open channel projects was demonstrated through application to an existing irrigation water transmission canal in Egypt (the Sheikh Zayed Canal). The results of validation scenarios matched the anticipated outcomes for channel profile and alignment and reproduced analytical solutions given in the literature for channel cross-section design. Application of the model to the Sheikh Zayed Canal gave a more optimal design; the OCCD model produced a design alternative with ~27% less cost than the constructed alternative.