摘要
一种近岸波浪能发电设备,其特有的双通道结构可将海水的双向流动转化为叶轮的单向旋转。针对该通道结构,利用Fluent 6.3软件MRF模型进行了二维数值计算,分析了4个叶片转过不同角度时,通道内流体的速度和压力分布,研究了通过发电设备的水流量和设备的压力输出功率,并进而研究了叶轮叶片转过角度对波浪能利用性能的影响。计算结果表明,当叶轮转动角度较小时,叶轮区间压差明显,通过设备的流量较少。随着叶轮转动角度增加,叶轮间压差先减小,然后增加;与之相对应,通过设备的流量及输出功率先增加,然后逐渐减小。
Described was an alongshore wave energy power generation device,of which the special dual-channel structure could convert the flow of sea water in dual directions into the rotation of the impeller in a single direction. A two-dimensional numerical calculation of the structure of the dual-channel was performed by utilizing the MRF( moving reference frame) model in the software Fluent 6. 3. The velocity and pressure distribution of the fluid inside the channel were analyzed when the number of blades was 4 and the fluid turned various angles. The water flow rate through the power generation equipment item and its output power were also studied. Furthermore,the influence of the angle that the blades on the impeller turn on the utilization efficiency of the wave energy was investigated. The calculation results show that when the turning angle of the impeller is relatively small,the pressure difference between any two zones of the impeller is conspicuous,thus the flow rate passing through the equipment item is relatively small. With an increase of the turning angle of the impeller,the pressure difference between any two zones of the impeller will first decrease and then increase. Corresponding with this,the flow rate passing through and the output power of the equipment item will first increase and then decrease gradually.
出处
《热能动力工程》
CAS
CSCD
北大核心
2014年第5期566-570,600,共5页
Journal of Engineering for Thermal Energy and Power
基金
国家重点基础研究发展项目(2011CB201500)
广东省博士启动项目(1209386)
关键词
双通道
波浪能
数值计算
dual channel,wave energy,numerical calculation
