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A numerical investigation into the effect of diffusers on the performance of hydro kinetic turbines using a validated momentum source turbine model

机译:使用验证的动量源涡轮机模型对扩散器对水动力涡轮机性能的影响进行数值研究

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Kinetic hydropower involves the use of hydro turbines, submerged within existing currents for power generation. They are applicable to ocean and tidal currents, rivers, and human-made channels. This versatility gives them advantages over conventional hydropower, however they suffer from low power densities. This numerical study investigates the use of diffusers to enhance the performance and viability of kinetic hydro turbines. To simplify the problem, the turbine is modeled as a momentum source region, a strategy that is first validated against Betz theory. The diffuser configuration produces 3.1 times more power than the turbine with no diffuser. A scaling analysis also shows a turbine with a diffuser outperforms a larger size turbine with no diffuser.
机译:动能水力发电涉及使用淹没在现有水流中的水轮机进行发电。它们适用于洋流和潮流,河流和人造河道。这种多功能性使它们比常规水力发电具有优势,但是它们的功率密度较低。这项数值研究研究了使用扩散器来增强动力水轮机的性能和可行性。为了简化问题,将涡轮机建模为动量源区域,该策略首先针对贝茨理论进行了验证。扩散器配置产生的功率是没有扩散器的涡轮机的3.1倍。比例分析还显示,带扩散器的涡轮机比不带扩散器的大型涡轮机性能更好。

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