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A DISCRETE LOCAL CIRCULATION MODEL FOR DARRIEUS TURBINES

机译:Darrius涡轮机的离散局部循环模型

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A new method is presented for predicting the aerodynamic loads and performance of a Darrieus turbine. The method utilizes an equivalent turbine for which the number of blades goes to infinity as the blade chord goes to zero such that the turbine solidity remains constant. In this way, the highly unsteady flow through a Darrieus turbine is represented by an equivalent steady flow. The corresponding continuous distributions of shed and and trailing voracity in the wake are determined from the gradient of the local bound vorticity distribution on the turbine perimeter. The degree of detail and calculation accuracy which can be obtained with this method are comparable to that obtained with a vortex model but with a much lower computation time requirement.
机译:提出了一种预测Darrius涡轮机的空气动力学负载和性能的新方法。该方法利用相同的涡轮机,其中叶片的叶片的数量达到无穷大,因为叶片和弦变为零,使得涡轮机固定保持恒定。以这种方式,通过DARRIEUS涡轮机的高度不稳定的流动由等效稳定流动表示。在唤醒中的SHED和尾随旋转性的相应连续分布由涡轮机周边的局部结束涡度分布的梯度确定。通过该方法可以获得的细节和计算精度与用涡流模型获得的程度相当,但是计算时间要求更低。

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