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首页> 外文会议>Book of abstracts of the 50th Israel annual conference on aerospace sciences >BLOWING PULSED BLOWING FLOW CONTROL PERFORMANCE PREDICTION ON A VERTICAL AXIS WIND TURBINE
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BLOWING PULSED BLOWING FLOW CONTROL PERFORMANCE PREDICTION ON A VERTICAL AXIS WIND TURBINE

机译：垂直轴风轮机的吹气和脉冲吹气控制性能预测

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An analysis of vertical axis wind turbines (VAWTs), subjected to flow control by means ofsteady and pulsed slot blowing, was performed. The analysis was based on blade element theorythat included experimental data acquired on a NACA 0012 airfoil. Two methods of control wereconsidered: constant local blade momentum coefficient (oscillatory jet) and constant turbinemomentum coefficient (steady jet). Furthermore, two methods for calculating the net turbinepower output were considered, namely a direct power correction method that accounts for thepumping power expended in slot blowing and an aerodynamic efficiency method. The resultsshow great potential of flow control by jet blowing using all methods and approaches. The bestnet performance increase, namely a factor of 3 in annual production, was achieved by means ofpulsed blowing using a constant blade momentum coefficient. The simplest of all the methods,namely constant turbine momentum coefficient via a single slot, resulted in a twofold increase inannual energy production.
机译：对垂直轴风力涡轮机（VAWT）进行流量分析的方法是 进行稳定且脉冲的缝隙吹气。该分析基于叶片元素理论 其中包括在NACA 0012机翼上获得的实验数据。两种控制方法分别是 考虑：恒定的局部叶片动量系数（振荡射流）和恒定的涡轮机 动量系数（稳定射流）。此外，有两种计算净透平的方法 考虑了功率输出，即一种直接功率校正方法，它考虑了 缝隙吹扫中消耗的泵送功率和空气动力效率方法。结果 展示了使用所有方法和方法进行射流控制的巨大潜力。最好的 净性能的提高，即通过以下方式实现了年产量的三分之一： 使用恒定的叶片动量系数进行脉冲吹气。所有方法中最简单的 即通过单个槽的恒定涡轮动量系数，导致涡轮的动量增加了两倍 年度能源生产。

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