The application of splitter blades can improve passage obstructions and reduce flow loss of small-scale organic Rankine cycle (ORC) radial inflow turbines. In this study, taking R245fa as the working fluid, splitter blades are applied to design an impeller layout for a 10 kW ORC radial inflow turbine, and numerical simulation is conducted on different impeller schemes through Fluent 15.0. The influence of the meridian length and circumferential position of the splitter blade on the performance of the turbine impeller is studied. The results show that the meridian length and circumferential position of the splitter blade exert greater effects on the flow field distribution inside the impeller and the impeller performance. When the circumferential offset of the splitter blade is around 0.6 and the blade length is around 80% of the length of main blade, the ORC radial inflow turbine designed in this study reaches optimum performance, and its performance is better than the traditional impeller.

中文翻译：

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带有分流叶片的 10 kW 径向流入涡轮机的空气动力学优化

分流叶片的应用可以改善小规模有机朗肯循环（ORC）径向流入涡轮机的通道阻塞并减少流动损失。本研究以R245fa为工质，应用分流叶片设计10 kW ORC径流式涡轮的叶轮布置，并通过Fluent 15.0对不同叶轮方案进行数值模拟。研究了分流叶片子午线长度和周向位置对涡轮叶轮性能的影响。结果表明，分流叶片的子午线长度和周向位置对叶轮内部流场分布和叶轮性能影响较大。当分流叶片的周向偏移量在 0 左右时。