基于电子表格的管网教学分析

IF 0.2
D. Brkić
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引用次数: 22

摘要

给出了一个教学用水利设计实例。学生的任务是建立一个环状的水分配网络(即确定节点的消耗,管道的处置,最后计算网络中管道的流量和最佳直径)。这可以通过原始的Hardy Cross法、改进的Hardy Cross法、节点环法等方法来实现。对于改进的Hardy Cross法和节点环法,必须使用矩阵计算。由于配水管网分析是土木工程水资源课程的重要组成部分,因此,为了使学生更简明有效地了解这类工程系统和相关设计问题,需要比手工教学更好的适当技术。所描述的电子表格求解器的使用非常适合这个目的,特别是知道电子表格求解器与面向手动的计算相比更加矩阵友好。虽然原始Hardy Cross方法不强制要求进行矩阵计算,但即使在这种情况下,也更倾向于更好地理解问题。介绍了常用的电子表格软件(Microsoft Excel)的应用,包括两个真实的课堂任务。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Spreadsheet-Based Pipe Networks Analysis for Teaching and Learning Purpose
An example of hydraulic design project for teaching purpose is presented. Students’ task is to develop a looped distribution network for water (i.e. to determinate node consumptions, disposal of pipes, and finally to calculate flow rates in the network’s pipes and their optimal diameters). This can be accomplished by using the original Hardy Cross method, the improved Hardy Cross method, the node-loop method, etc. For the improved Hardy Cross method and the node-loop method, use of matrix calculation is mandatory. Because the analysis of water distribution networks is an essential component of civil engineering water resources curricula, the adequate technique better than the hand-oriented one is desired in order to increase students’ understanding of this kind of engineering systems and of relevant design issues in more concise and effective way. The described use of spreadsheet solvers is more than suitable for the purpose, especially knowing that spreadsheet solvers are much more matrix friendly compared with the hand-orientated calculation. Although matrix calculation is not mandatory for the original Hardy Cross method, even in that case it is preferred for better understanding of the problem. The application of commonly available spreadsheet software (Microsoft Excel) including two real classroom tasks is presented.
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来源期刊
Spreadsheets in Education
Spreadsheets in Education EDUCATION & EDUCATIONAL RESEARCH-
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