摘要
为探究海上潮湿盐雾环境变化对海上风机翼型气动性能产生的影响,采用组分运输模型与离散相模型对海上盐雾环境进行环境模型建立和参数设定,结合壁面沉积模型用户自定义函数,以NACA4415翼型为研究对象进行数值模拟。研究发现:翼型的升阻力系数随着盐雾浓度的增加而增大,随着空气湿度的升高而减小;颗粒在翼型表面0.2~0.8弦长处均匀分布,在靠近前缘处沉积较少,尾缘沉积较多;速度的增加会降低颗粒的沉积率,翼型攻角升高会改变表面速度分布,影响翼型表面颗粒沉积率;空气湿度升高会减少盐雾颗粒在翼型表面的沉积量,在沉积量较多的区域降低更加明显,并且随着攻角的增大,湿度的影响逐渐减小。
In order to explore the influence of the change of wet salt spray environment on the aerodynamic performance of the offshore wind airfoil,the component transport model and discrete phase model were used to establish the environmental model and set the parameters of the offshore salt spray environment.Combined with the user-defined function of the wall deposition model,the numerical simulation was carried out on the NACA4415 airfoil.It is found that the lift resistance coefficient of airfoil increases with the increase of salt spray concentration and decreases with the increase of air humidity.The particles are evenly distributed on the surface of the airfoil at 0.2~0.8 chord,with less deposition near the leading edge and more deposition at the trailing edge.With the increase of velocity,the deposition rate of particles decreases.With the increase of airfoil attack angle,the surface velocity distribution changes and the deposition rate is affected.With the increase of air humidity,the deposition amount of salt spray particles on the airfoil surface is reduced,and the decrease is more obvious in the area with large deposition amount,and the influence of humidity decreases with the increase of the angle of attack.
作者
程植
孙传宗
单光坤
CHENG Zhi;SUN Chuanzong;SHAN Guangkun(School of Mechanical Engineering,Shenyang University of Technology,Shenyang 110870,Liaoning Province,China)
出处
《分布式能源》
2024年第3期65-72,共8页
Distributed Energy
基金
辽宁省科技厅博士启动基金项目(2019-BS-182)。
关键词
盐雾环境
翼型
气动性能
离散相模型
沉积
salt spray environment
airfoil profile
aerodynamic performance
discrete phase model
deposition
作者简介
程植(1999),男,硕士研究生,主要研究方向风力机叶片气动仿真分析,18740078896@163.com;孙传宗(1982),男,博士,副教授,主要研究方向非线性动力学与控制、转子动力学和有限元方面的研究;单光坤(1968),女,博士,教授,主要研究方向风电机组状态监测及故障诊断研究。
