水下航行器海流发电装置叶轮的数值仿真

上海交通大学学报（自然版） ›› 2013, Vol. 47 ›› Issue (08): 1306-1311.

水下航行器海流发电装置叶轮的数值仿真

田文龙，宋保维，毛昭勇

(西北工业大学航海学院，西安 710072)

收稿日期:2012-06-25 出版日期:2013-08-29 发布日期:2013-08-29
基金资助:
国家自然科学基金资助项目(51179159)

Numerical Analysis of a Water Turbine for Underwater Vehicles

TIAN Wenlong,SONG Baowei,MAO Zhaoyong

(School of Marine Engineering, Northwestern Polytechnical University, Xi’an 710072, China)

Received:2012-06-25 Online:2013-08-29 Published:2013-08-29

摘要/Abstract

摘要：

针对水下航行器航行过程中的能源补给问题，设计了一种用于水下航行器的垂直轴海流发电装置.为探索稳定海流中发电装置叶轮的受力特性和功率输出特性，利用滑移网格技术对叶轮流场进行了二维非定常数值仿真，结果与实验数据较为吻合.针对4叶片和3叶片叶轮分析了叶轮旋转速度ω和叶片翻转角θ对叶轮发电性能的影响，结果表明，3叶片叶轮最大输出功率要高于4叶片叶轮，展长为1 m的3叶片叶轮在v∞=1 m/s、θ=120°和ω=0.3 rad/s时获得最大平均输出功率29.33 W.分析了3叶片叶轮在来流v∞=1 m/s下速度场的基本特点，为实际的设计安装工作提供了预测和指导.

关键词: 水下航行器, 海流发电装置, 计算流体力学, 滑移网格

Abstract:

In this paper, a vertical axis water turbine (VAWT) was developed to supply energy for underwater vehicles. 2-D transient numerical studies were conducted to determine the operating performance and power output of the turbine. A RNG k-ε turbulence model was used to perform the transient simulations. For both the four-bladed turbine and three-bladed turbine, the influence of blade pitch angle on the turbine performance was investigated over a range of rotor rotation velocity ω. It was found that the three-bladed turbine showed a larger power output than the four-bladed turbine. For a three-bladed turbine, a maximum averaged power of 29.33 W was generated when v=1 m/s, θ=120° and ω=0.3 rad/s. Contours of the velocity field of a three-bladed turbine under an inflow velocity of 1 m/s were also analyzed, providing helpful reference for the future design of turbines.

Key words: underwater vehicle, water turbine, computational fluid dynamics, moving mesh

中图分类号:

TJ 630.2

田文龙，宋保维，毛昭勇. 水下航行器海流发电装置叶轮的数值仿真[J]. 上海交通大学学报（自然版）, 2013, 47(08): 1306-1311.

TIAN Wenlong,SONG Baowei,MAO Zhaoyong. Numerical Analysis of a Water Turbine for Underwater Vehicles[J]. Journal of Shanghai Jiaotong University, 2013, 47(08): 1306-1311.

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