论文标题:小城镇给水系统数值模拟及优化设计研究
Numerical Simulation and Optimal Design of Water Supply Networks in Little Town
论文作者
论文导师 李太富,论文学位 硕士,论文专业 流体机械工程
论文单位 西华大学,点击次数 115,论文页数 73页File Size5708K
2008-05-01论文网 http://www.lw23.com/lunwen_556889402/
water supply networks;; optimal design;; mathematic model;; economic parameters;; solving method
给水管网优化设计在给水工程中占有重要地位,国内外学者对其进行了广泛而深入的研究,提出了多种优化方法,但这些方法在实际应用中均存在一定的局限性。具有实用性的优化方法一直是城镇给水系统优化领域一个课题。 本文针对给水管网优化设计的基础。给水管网的布置及其简化、管网系统的水力分析进行了深入的研究。运用系统理论分别建立了多种供水工况下的数学模型,分析了经济参数对优化计算结果的影响,并对管网系统模型进行求解的方法作了系统分析。标准优化算法优化结果为一个连续变量,而实际管径的非连续性使得标准优化法的结果不能满足设计要求,利用WAD管网辅助设计建模软件与标准优化算法相结合,对郫县以及重庆某镇的给水系统工程进行了模拟优化,其优化结果改进了标准优化算法的结果在实际应用中的局限性,在实用性的优化设计方法上做了一些探讨,对小城镇给水系统优化设计具有一定的指导意义。
The optimization in the design of water supply networks is important in the water supply engineering. After wide and deep research, the domestic and abroad scholars proposed multiple optimization methods. But these methods have limitation in practical application. Practicality optimization method is an important subject in water supply networks in towns. In this thesis optimum design, the layout of water supply networks and the hydraulic analysis of the network system are introduced, and research is carried out. Using system theory, mathematic models are set up on various water supply conditions, the effect factors of economic parameters to the optimized calculation results are discussed. System analysis to the solving method of network system model is brought out. The optimization result of standard optimization arithmetic is a continuous variable, while the real pipe diameter is a discontinuous variable. The results of standard optimization may not satisfy the design requirements. This research combined WAD—a kind of optimization design software for pipe supply networks with standard optimization. Arithmetic simulation is carried out based on the water supply networks in Pi-xian county and a town in Chongqing city. As a result limitation of the standard optimization is improved greatly in practical use. Exploitation on practical optimal design methods is proceed. This thesis is of guide significance to the optimal design of water supply networks in towns.
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