Influence of blade numbers on start-up performance of vertical axis tidal current turbines

Sun Ke; Yi Yang; Zhang JishengZhang JianhuaZaidi Syed Sajjad HaiderSun Shuaihui

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Influence of blade numbers on start-up performance of vertical axis tidal current turbines

机译：Influence of blade numbers on start-up performance of vertical axis tidal current turbines

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摘要

To alleviate the energy crisis, the tidal energy extraction has become a hot topic in recent years. As a commonly utilized energy converter, a primary concern of vertical axis tidal turbines (VATTs) is the incapability to selfstart. Previous studies have found that the starting performance has a great correlation with the number of blades. However, the detailed effects of blade number on starting characteristic are not fully understood. Therefore, it is necessary to further assess the influences of the number and azimuthal angle of blades on starting characteristics. In this study, we investigate the effects of the blade number on start-up performance of VATTs by means of the commercial Computational Fluid Dynamic (CFD) software CFX. It can be seen that the increase of the blade number results in a more homogeneous flow field, and the varying angles can lead to a high average torque. Besides, the region of 100 degrees -120 degrees is proved that all turbines with three different blade numbers can achieve a better starting performance.

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《Ocean engineering》 |2022年第1期|110314.1-110314.8|共8页
作者
Sun Ke; Yi Yang; Zhang JishengZhang JianhuaZaidi Syed Sajjad HaiderSun Shuaihui;
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作者单位

Harbin Engn Univ, Coll Shipbldg Engn, Harbin 150001, Peoples R China|Hohai Univ, Key Lab, Minist Educ Coastal Disaster & Protect, Nanjing 210024, Peoples R China;

Harbin Engn Univ, Coll Shipbldg Engn, Harbin 150001, Peoples R China;

Hohai Univ, Key Lab, Minist Educ Coastal Disaster & Protect, Nanjing 210024, Peoples R ChinaHarbin Engn Univ, Coll Shipbldg Engn, Harbin 150001, Peoples R China|Xian Univ Technol, State Key Lab Ecohydraul Northwest Arid Reg, Xian 710048, Peoples R ChinaNatl Univ Sci & Technol, Pakistan Navy Engn Coll, Islamabad, PakistanXian Univ Technol, State Key Lab Ecohydraul Northwest Arid Reg, Xian 710048, Peoples R China;

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正文语种英语
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Tidal current energy; Vertical axis tidal turbine; Start-up performance; Starting torque;

Influence of blade numbers on start-up performance of vertical axis tidal current turbines

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