Modeling approach for hydrokinetic turbine

2016 International Renewable and Sustainable Energy Conference (IRSEC) Pub Date : 2016-11-01 DOI:10.1109/IRSEC.2016.7983893

S. Hazim, A. El Ouatouati, M. T. Janan

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引用次数: 3

Abstract

Given the interest in renewable energy, various types of production of this kind of energy are in study. In the present, we are interested in harnessing marine energy currents, especially the hydro-kinetic turbines with horizontal axis. The density of water is 832 times greater than air one and underwater currents are also more powerful than the wind, the electric power supplied by a hydroelectric turbine is much greater than that provided by a wind turbine. In this fact water turbines are smaller than wind turbines. The aim of the present work is to calculate the hydrodynamic loads, estimate the energetic performance and determine the blade optimal parameters for a turbine. The motion of the rotor produces a three dimensional flow, which make the modeling task complicated. Two hydrodynamic theories are combined “Blade Element Method” and “the axial momentum theory” in order to find all essential parameters for sizing blades. The equations obtained are solved by using an iterative algorithm in order to obtain the hydrodynamic loads and torque. Computations were accomplished for a NACA4415 profile.

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水动力水轮机建模方法

鉴于对可再生能源的兴趣，各种类型的这种能源的生产正在研究中。目前，我们对利用海洋能量流，特别是具有水平轴的水力涡轮机感兴趣。水的密度是空气的832倍，水下水流也比风更强大，水力涡轮机提供的电力比风力涡轮机提供的电力大得多。事实上，水轮机比风力涡轮机小。本文的目的是计算水轮机的水动力载荷，估计叶片的能量性能和确定叶片的最佳参数。转子的运动产生三维流场，使建模工作变得复杂。结合“叶片单元法”和“轴向动量理论”两种流体力学理论，找到了叶片尺寸确定的所有必要参数。利用迭代算法求解得到的方程，从而得到流体动力载荷和扭矩。完成了NACA4415剖面的计算。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2016 International Renewable and Sustainable Energy Conference (IRSEC)

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