双级串联水平轴海流能发电装置仿真研究

Simulation Research on Two-stage Series Horizontal Axis Current Power Generation Device

在当前全球倡导发展"低碳经济"和化石能源日益枯竭的大背景下,发展清洁的可再生能源是大势所趋,海流能具有源源不断,清洁高效的特点,如果能够妥善利用,可有效缓解能源紧缺的问题。利用仿真软件对比分析了所设计的双级串联水平轴海流能发电装置在有、无导流罩两种工况下的工作性能,验证了利用装置导流罩提高发电性能的可行性;随后,利用CFD计算方法对比分析单级、二、三级叶轮在不同转速下的水动力特性,验证了二级叶轮方案的可行性,得出最佳转速。

In the current global advocacy for the development of a"low-carbon economy"and the growing depletion of fossil energy,the development of clean and renewable energy is the general trend.In order to alleviate the contradiction between fossil energy and ecological environment,humans are deepening the way to explore renewable clean energy,and as a treasure trove of resources,the ocean began to be concerned by all countries.And the energy of ocean currents,which can flow with a steady stream,and is clean and efficient,if properly used,can effectively alleviate the problem of energy shortages.The two-stage series horizontal axis current power generation device working performance was analyzed based on simulation software,which verified the feasibility of using fairing to improve the power generating efficiency.And,the CFD calculation method was used to compare and analyze the hydrodynamic characteristics of single stage impeller,double-stage impeller and three-stage impeller device at different rotational speeds,which verifies the feasibility of the secondary impeller scheme and determines the optimal speed.