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首页> 外文期刊>Memoirs of the Faculty of Engineering KYUSHU University >A Computational Approach for Two-Dimensional Flow across a Darrieus Runner in an Arbitrary Shaped Duct
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A Computational Approach for Two-Dimensional Flow across a Darrieus Runner in an Arbitrary Shaped Duct

机译：任意形状管道中穿过Darrieus转轮的二维流动的计算方法

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摘要

A comparatively rapid computational method for an inviscid flow field of a two-dimensional Darrieus-type runner in an arbitrary shaped duct and a draft tube is proposed in the present paper. In the first stage of the computation, the stream function and the velocity potential at any position in the physical plane are obtained by analyzing the flow through the duct by vortex panel method, considering a discrete distribution of vortices along the duct walls. These values are then utilized in transforming the flow field into a reflected plane of flow with parallel walls, considering that the stream function on the wall takes a constant value. In the second stage, the induced flow due to bound and released vortices of the Darrieus blades is analyzed by the image method. The Darrieus blade characteristics, evaluated by this approach with the measured data of forces and moment acting on the blade, and the calculated flow distributions due to the blade actions are shown and discussed for various shaped ducts.
机译：提出了一种比较快速的二维Darrieus型流道在任意形状的导管和导流管中无粘性流场的计算方法。在计算的第一阶段，考虑涡旋沿管道壁的离散分布，通过涡流板法分析流经管道的流量，即可获得物理平面中任意位置的流函数和速度势。考虑到壁上的流函数取恒定值，然后将这些值用于将流场转换为具有平行壁的反射流平面。在第二阶段中，通过成像方法分析了由于Darrieus叶片的束缚和释放涡流引起的诱导流。显示并讨论了针对各种异形风管的Darrieus叶片特性，该方法利用作用在叶片上的力和力矩的测量数据评估了这种方法，并计算了由于叶片作用而产生的流量分布。

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