基于PSO算法的抛物线形渠道断面优化方法研究

基于PSO算法的抛物线形渠道断面优化方法研究(论文4000字)
摘要：渠道是一种广泛应用于农业水利工程中的输配水建筑物，合理的渠道设计对节水农业的发展具有十分重要的意义。本文首先介绍PSO算法的相关理论知识，然后以设计流量和计算流量之差最小为目标函数，以渠道宽深比和不冲不淤流速为约束条件，对二次抛物线形渠道断面优化的数学模型进行研究，得到陕西省石头河灌区东干三支渠段的传统优化方法与PSO算法的求解结果。与试算法结果相比，PSO算法下的最优化方案二次抛物线形渠道混凝土衬砌量减少4.7593 m3，土方量减少6.2192 m3，说明通过优化断面与PSO算法相结合的方法可以达到抛物线形渠道工程优化的要求，为抛物线形渠道混凝土衬砌断面的设计提供了参考依据。
关键词：PSO算法；二次抛物线形；渠道断面；优化求解

Research on Parabolic Channel Sections Optimization Based on PSO Algorithm
Abstract: Channel is a widely used in agricultural water conservancy projects of water distribution and distribution structures, reasonable channel design for the development of water-saving agriculture is of great significance. In this paper, the theoretical knowledge of PSO algorithm is introduced firstly. Then, the objective function is to minimize the difference between calculated and calculated flow rates, and the mathematical model of quadratic parabolic channel cross section optimization Through the research, the traditional optimization method and the PSO algorithm of the three branches of the Donggan River in the Shitouhe Irrigation District in Shaanxi Province were obtained. Compared with the result of the trial method, the optimization scheme under the PSO algorithm reduces the parabolic canal concrete lining volume by 4.7593 m3 and the earthwork volume by 6.2192 m3, which shows that the parabola channel optimization can be achieved through the combination of the optimized section and the PSO algorithm. The requirements provides a reference for parabolic channel concrete lining section design.
Key words: PSO algorithm; quadratic parabola; channel cross section; optimal solution