Enhancing the efficiency of hydrokinetic Savonius turbine with guiding walls

IF 2.1 4区 环境科学与生态学 Q3 ENGINEERING, CHEMICAL
Ahmed Ayadi, Nour Rabeh, Haytham Nasraoui, Mabrouk Mosbahi, Zied Driss
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引用次数: 0

Abstract

Hydropower offers a means of generating electricity through the conversion of water flow's mechanical energy using rotors. The helical Savonius rotor is recognized as one of the most commonly employed rotor types. An approach employed to boost power output involves the utilization of guiding walls, positioned upstream of the Savonius rotor. In this specific study, an investigation is presented into a helical Savonius rotor equipped with an innovative deflector design composed of guiding walls in the form of NACA-profiled plates. Ansys Fluent is used to simulate the water flow around the helical Savonius turbine and the guiding walls. The geometric parameters of this design of guiding walls are adjusted to identify the most efficient configuration. When examining all considered configurations, an improvement is noted in the maximum power coefficient, with a significant increase compared with a conventional configuration. In fact, the power coefficient could be improved by 44% using optimal dimensions of the guiding walls. The inclusion of the proposed guiding walls in conjunction with the optimized geometric parameters emerges as a strategy to enhance the rotor's power coefficient.

带导流壁的萨沃纽斯水轮机效率的提高
水力发电是一种利用转子将水流的机械能转化为电能的发电手段。螺旋萨沃纽斯转子被认为是最常用的转子类型之一。一种用于提高功率输出的方法包括利用定位在Savonius转子上游的引导壁。在这个具体的研究中,提出了一个螺旋萨沃纽斯转子配备了一个创新的偏转板设计,由naca型板形式的引导壁组成。利用Ansys Fluent软件对螺旋萨沃纽斯水轮机及其导流壁周围的水流进行了数值模拟。这种设计的导向墙的几何参数进行调整,以确定最有效的配置。在检查所有考虑的配置时,注意到最大功率系数的改进,与传统配置相比显着增加。事实上,通过优化导壁尺寸,功率系数可以提高44%。将所提出的导流壁与优化的几何参数相结合,是提高转子功率系数的一种策略。
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来源期刊
Environmental Progress & Sustainable Energy
Environmental Progress & Sustainable Energy 环境科学-工程:化工
CiteScore
5.00
自引率
3.60%
发文量
231
审稿时长
4.3 months
期刊介绍: Environmental Progress , a quarterly publication of the American Institute of Chemical Engineers, reports on critical issues like remediation and treatment of solid or aqueous wastes, air pollution, sustainability, and sustainable energy. Each issue helps chemical engineers (and those in related fields) stay on top of technological advances in all areas associated with the environment through feature articles, updates, book and software reviews, and editorials.
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