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A modified novel blade configuration proposal for a more efficient VAWT using CFD tools

机译：修改后的新型刀片配置建议，以使用CFD工具实现更高效的VAWT

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摘要

It is a priority to generate affordable and reliable energy with higher participation of renewable energy technologies into the global energy mix to provide efficient sustainable energy services for everyone, highlighting the need to focus on vulnerable communities in developing countries with limited or no access to electricity. Vertical axis wind turbines (VAWT) are widely used for renewable electricity generation. In that order, Savonius rotor, being a VAWT, is commonly used because of its numerous advantages for small scale generation. Thus, wind energy research on a modified Savonius rotor might be a feasible solution for powering vulnerable communities with no access to the grid. Hence, this paper shows how to improve the performance of a conventional Savonius blade by introducing a novel configuration without expensive and complex modifications on the geometry. For that purpose, a C-m and C-p coefficients comparison between 13 proposed scenarios against the conventional configuration to define a novel one, with better performance is carried out through a 2D computational fluid dynamic analysis by using Ansys Fluent 18.0. The SST k-omega to model is selected as the turbulent model. As a result, a higher performance Savonius novel rotor configuration is identified with 17.81% improvement over the conventional configuration.
机译：当务之急是产生可负担和可靠的能源，同时将可再生能源技术更多地纳入全球能源结构，为每个人提供有效的可持续能源服务，这凸显了需要重点关注发展中国家电力供应有限或无法供电的脆弱社区。垂直轴风力涡轮机（VAWT）被广泛用于可再生能源发电。按照这种顺序，作为VAWT的Savonius转子由于具有小规模发电的众多优势而被广泛使用。因此，对改进的Savonius转子进行风能研究可能是为无法接入电网的脆弱社区提供动力的可行解决方案。因此，本文展示了如何通过引入新颖的配置而无需对几何结构进行昂贵且复杂的修改来提高常规Savonius叶片的性能。为此，使用Ansys Fluent 18.0通过2D计算流体动力学分析，对13种拟议方案与常规配置之间的C-m和C-p系数进行了对比，以定义一种具有更好性能的新型配置。选择要建模的SSTk-ω作为湍流模型。结果，发现了更高性能的Savonius新型转子配置，与传统配置相比提高了17.81％。

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