| 引用本文: | 张锦岚,王凯,张万超,等.浮式振荡立轴叶轮的三维效应影响.[J].国防科技大学学报,2019,41(3):63-69.[点击复制] |
| ZHANG Jinlan,WANG Kai,ZHANG Wanchao,et al.Three-dimensional effect of floating oscillating vertical axis tidal turbine[J].Journal of National University of Defense Technology,2019,41(3):63-69[点击复制] |
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| 浮式振荡立轴叶轮的三维效应影响 |
| 张锦岚1, 王凯1, 张万超2, 周亚辉3 |
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(1. 武汉第二船舶设计研究所， 湖北 武汉 430064;2. 江苏科技大学 船舶与海洋工程学院， 江苏 镇江 212003;3. 江苏科技大学 能源与动力学院， 江苏 镇江 212003)
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| 摘要: |
| 为研究振荡运动下立轴水轮机的三维效应影响，采用ANSYS CFX软件三维模拟立轴水轮机在不同展弦下的振荡运动（横荡、纵荡），并与二维模拟的立轴水轮机作对比，通过最小二乘法拟合计算得到水轮机推力和侧向力系数时域结果，分析得到不同展弦比下水轮机阻尼系数和附加质量系数。结果表明：随着展弦比增大，叶轮潮流能的转换效率逐渐增大；三维振荡叶轮的水动力载荷与叶轮展长呈正相关，当展弦比达到10时其水动力载荷及能量转换效率和二维的计算结果相当；三维水轮机水动力系数常数项和阻尼项随展弦比增大而增大。 |
| 关键词: 立轴水轮机 三维效应 最小二乘法 展弦比 叶轮效率 |
| DOI：10.11887/j.cn.201903011 |
| 投稿日期：2018-03-16 |
| 基金项目:江苏省自然科学基金资助项目（BK20180980） |
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| Three-dimensional effect of floating oscillating vertical axis tidal turbine |
| ZHANG Jinlan1, WANG Kai1, ZHANG Wanchao2, ZHOU Yahui3 |
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(1. Wuhan Second Ship Design & Research Institute, Wuhan 430064, China;2. College of Naval Architecture and Ocean Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China;3. College of Energy and Power, Jiangsu University of Science and Technology, Zhenjiang 212003, China)
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| Abstract: |
| In order to study the three-dimensional effect on the oscillated vertical axis tidal turbine, the CFX software was employed to simulate the oscillated (surge and sway) turbine with different span-chord ratios. The simulation results were then compared with those in 2D situation. And then, the time series curves of thrust and lateral force coefficients of the hydraulic turbine with different aspect ratios were fitted by least square method, and the damping and additional mass coefficients were obtained. The results show that the current power output efficiency of the turbine increases with the span-chord ratio increased. The hydrodynamic load of three-dimensional oscillating tidal turbine is positively correlated with the elongation of the turbine. When the span chord ratio reaches 10, the hydrodynamic loads and power conversion efficiency of the 3D oscillating turbine are basically the same as those of the 2D one. The constant and damping terms of the hydrodynamic coefficients of the 3D turbine increase with the increase of span chord ratio. |
| Keywords: vertical axis turbine three-dimensional effect least square method span-chord ratio efficiency of turbine |
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