摘要
在海洋环境中,波浪等环境因素会使水轮机受到非均匀载荷作用,从而造成水轮机疲劳破坏。为了获得较高的获能效率,同时保证较大的疲劳寿命,需要合理布置水轮机位置。为此,利用计算流体动力学软件Fluent对波流相互作用下水轮机水动力性能进行数值模拟,得到不同安装深度下水轮机所受轴向力、扭矩、轴向力系数、获能系数等相关参数。利用3D打印技术制作水轮机模型,并在水槽中进行模型试验,验证了VOF造波方法对波浪作用下水平轴潮流能水轮机水动力性能分析的适用性。研究结果表明:波浪和安装深度对水轮机有很大影响,即在波浪作用下,水轮机水动力性能的瞬时值均发生周期性波动,且这种周期性波动均随着安装深度的增加而逐渐减小;虽然水轮机所受轴向力和扭矩的平均值受水轮机安装深度的影响很小,但是随着安装深度的增加两者均呈现出逐渐增大的趋势;此外,水轮机平均轴向力系数和功率系数随着安装深度的增加也呈现出逐渐增大的趋势。对不同安装深度下水轮机水动力性能的研究可以为水轮机载荷分析、叶片加工制造以及安装位置的选取提供一定的参考。
In the marine environment, environmental factors such as waves will make the turbine bear non-uniform loads, resulting in turbine/s fatigue damage. It is necessary to properly arrange the turbine position to obtain higher energy efficiency, while ensuring a larger fatigue life. So the influence of the installation depth of the turbine under wave-current combined action is studied using the computational fluid dynamics software Fluent, and the feasibility of the VOF wave-making method is verified using the flume test. The results show that under the action of the waves, the force and torque of the turbine are periodically fluctuating, and the periodic fluctuation caused by the wave gradually decreases with the increase of the installation depth of the turbine. In addition, the average value of the axial force coefficient and the power coefficient of the turbine gradually increases with increasing installation depth of the turbine. The study of hydrodynamic performances of the turbine under different installation depths can provide some reference for turbine load analysis, blade manufacturing and selection of installation location.
作者
袁鹏
梁兰健
王树杰
司先才
谭俊哲
黎江
YUAN Peng;LIANG Lan-jianI;WANG Shu-jie;SI Xian-cai;TAN Jun-zhe;LI Jiang(College of Engirwering Ocean U）liversity of China,Qingdao 266100 Shandong Provirwe China;Qingdao Key LaboratoU of Marine Renewable Energies Qingdao 266100 Shcaldong Provinee China)
出处
《海洋技术学报》
2018年第3期72-78,共7页
Journal of Ocean Technology
基金
国家自然科学基金资助项目(51479185)
