基于改进LS-STAG浸入边界法的风力机转子自旋数值模拟

IF 0.9 Q4 ENGINEERING, MECHANICAL

International Journal of Rotating Machinery Pub Date : 2017-10-11 DOI:10.1155/2017/6418108

I. Marchevsky, V. Puzikova

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引用次数: 6

摘要

利用改进的LS-STAG水平集/切割单元浸没边界法，开发了一个用于风力涡轮机转子自转数值模拟的软件包。级别集函数用于浸入式边界描述。提出了一种基于贝塞尔曲线的复杂翼型水平集函数构造算法。此外，还描述了在不重构每个新转子位置的贝塞尔曲线的情况下随时重新计算水平集函数的算法。提出了一种用于气动转矩滤波的二阶巴特沃斯低通滤波器，用于粗网格模拟。为了验证改进的LS-STAG方法，在中模拟了经过带有两个叶片的自转Savonius转子的流动。

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Numerical Simulation of Wind Turbine Rotors Autorotation by Using the Modified LS-STAG Immersed Boundary Method

A software package is developed for numerical simulation of wind turbine rotors autorotation by using the modified LS-STAG level-set/cut-cell immersed boundary method. The level-set function is used for immersed boundaries description. Algorithm of level-set function construction for complex-shaped airfoils, based on Bezier curves usage, is proposed. Also, algorithm for the level-set function recalculation at any time without reconstructing the Bezier curve for each new rotor position is described. The designed second-order Butterworth low-pass filter for aerodynamic torque filtration for simulations using coarse grids is presented. To verify the modified LS-STAG method, the flow past autorotating Savonius rotor with two blades was simulated at .

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来源期刊

International Journal of Rotating Machinery ENGINEERING, MECHANICAL-

CiteScore

2.40

自引率

0.00%

发文量

审稿时长

25 weeks

期刊介绍： This comprehensive journal provides the latest information on rotating machines and machine elements. This technology has become essential to many industrial processes, including gas-, steam-, water-, or wind-driven turbines at power generation systems, and in food processing, automobile and airplane engines, heating, refrigeration, air conditioning, and chemical or petroleum refining. In spite of the importance of rotating machinery and the huge financial resources involved in the industry, only a few publications distribute research and development information on the prime movers. This journal is the first source to combine the technology, as it applies to all of these specialties, previously scattered throughout literature.