论文部分内容阅读
双通道海流能发电设备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模型进行二维数值计算,分析叶片数目分别为4、6、8时,转动角度在5°~90°时,通道内流体的速度和压力分布,研究叶轮叶片数目和转动角度对通过发电设备的海水流量和设备的输出功率等性能参数的影响。计算结果表明,在一个性能参数变化周期内,随着叶轮转动角度的增加,通过设备的流量和发电设备的输出功率随之先增后减。随着叶轮叶片的数目增加,该设备的流量和发电设备的输出功率最大值峰值减小。
The dual-channel, sea-flow power generation facility transforms the bi-directional flow of seawater into unidirectional rotation of the impeller. According to the channel structure, the MRF model of Fluent 6.3 was used to carry out two-dimensional numerical calculation. The velocity and pressure distribution of the fluid in the channel were analyzed when the number of blades was 4, 6 and 8 respectively and the rotation angle was between 5 ° and 90 °. The number of blades and the angle of rotation affect the performance parameters such as the seawater flow through the power plant and the output power of the equipment. The calculation results show that the flow rate through the equipment and the output power of the power generation equipment increase first and then decrease with the increase of the rotating angle of the impeller during a period of changing performance parameters. As the number of impeller blades increases, the maximum flow rate of the device and the peak power output of the power plant decrease.