The Design and Analysis of a Novel Vertical Axis Small Water Turbine Generator for Installation in Drainage Lines

Werayoot Lahamornchaiyakul, N. Kasayapanand
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引用次数: 1

Abstract

The objective of this study was to determine the mechanical power efficiency of a novel vertical-axis small water turbine generator for installation in drainage lines. A 3D model was created to evaluate the performance of each design. The system was designed, analysed, and calculated for the most suitable geometries of the water inlet, drainage lines, main structure, and water turbine wheels using computational fluid dynamics software. The diameter of the water turbine wheel in the numerical model was 48 mm. The control volume technique was used in the numerical simulation method, and the k-epsilon turbulence model was employed to find the computational results. For the Computational Fluid Dynamics (CFD), the appropriate mash element for each model section was generated for numerical simulation, which showed that the torque from the water turbine modelling varied depending on the time domains and was related to speed relative to the developed force. The maximum torque and maximum power that a vertical-axis small water turbine for installation in a drainage line could generate at a maximum flow rate of 0.0030 m3/s were 0.55 N.m and 26.84 watts, respectively. Similarly, calculations with mathematical equations, found that the maximum mechanical power value after calculating the rate of loss within the pipe system was 12.95 watts. The forces generated by the speed and pressure of the fluid can then be applied to the structure of the water turbine wheel. The vertical-axis small water turbine for installation in a drainage line was analysed under its self-weight by applying a gravitational acceleration of 9.81 m/s2 in Solidworks Simulation software version 2022. The numerical simulations that resulted from this research could be used to further develop prototypes for small water turbines generating commercial electricity.
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一种新型排水管道立式轴小型水轮发电机的设计与分析
本研究的目的是确定安装在排水管线中的新型垂直轴小型水轮发电机的机械功率效率。创建了一个3D模型来评估每个设计的性能。该系统是使用计算流体动力学软件针对进水口、排水管线、主要结构和水轮机叶轮的最合适几何形状进行设计、分析和计算的。数值模型中水轮机叶轮的直径为48 mm。在数值模拟方法中使用了控制体积技术,并使用k-ε湍流模型来寻找计算结果。对于计算流体动力学(CFD),为每个模型截面生成了适当的mash元素进行数值模拟,这表明水轮机建模产生的扭矩随时间域的变化而变化,并且与速度相对于发展力有关。安装在排水管线中的垂直轴小型水轮机在最大流量为0.0030 m3/s时可产生的最大扭矩和最大功率分别为0.55 N.m和26.84瓦。类似地,用数学方程进行的计算发现,在计算管道系统内的损耗率后,最大机械功率值为12.95瓦。由流体的速度和压力产生的力然后可以施加到水轮机叶轮的结构上。在Solidworks仿真软件2022版中,通过应用9.81 m/s2的重力加速度,对安装在排水管线中的垂直轴小型水轮机在自重作用下进行了分析。这项研究的数值模拟结果可用于进一步开发商业发电小型水轮机的原型。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
4.50
自引率
16.00%
发文量
83
审稿时长
8 weeks
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