升阻复合型垂直轴风力机的自启动性能和稳态性能的数值分析  

Numerical Analysis of Self-Starting Performance and Steady-State Performance of Lift-Drag Hybrid Vertical Axis Wind Turbine

作　　者：戴俊杰 黄惠兰[1] 李刚[2] 罗嘉斌 张敬宇 DAI Jun-jie;HUANG Hui-lan;LI Gang;LUO Jia-bin;ZHANG Jing-yu(School of Mechanical Engineering,Guangxi University,Nanning 530004;School of Electrical Engineering,Guangxi University,Nanning 530004)

机构地区：[1]广西大学机械工程学院,广西南宁530004 [2]广西大学电气工程学院,广西南宁530004

出　　处：《制造业自动化》2025年第4期175-182,共8页Manufacturing Automation

基　　金：国家自然科学基金(51466001);广西自然科学基金(2017GXNSFAA198344,2017GXNSFDA198042)。

摘　　要：为了充分利用城市环境中的风能,设计一种升阻复合型垂直轴风力机(Darrieus Combined with Savonius Vertical Axis Wind Turbine,DCS-VAWT),用以解决低风速下升力型垂直轴风力机无法自启动的问题。采用计算流体力学(CFD)模拟评估DCS-VAWT的动态自启动性能和稳态性能。与传统静态CFD模拟方法不同,采用流固耦合的被动型CFD方法,模拟了风力机由静止到稳定运行的瞬态自启动过程。研究结果表明,DCS-VAWT能够在5 m/s的低风速条件下成功自启动。DCS-VAWT自启动性能随着内部阻力型转子的直径的增加而提高,但是稳态性能下降。由于转动惯量和气动外型的影响,DCS-VAWT内部采用两叶片的阻力型转子的自启动性能比三叶片的好。经过优化后的两叶片DCS-VAWT,在5 m/s来流风速下,16 s成功自启动,最佳叶尖速比2.5时,最大的风能利用效率为0.261。To fully harness wind energy in urban environments,lift-drag hybrid vertical axis wind turbine(known as DCS-VAWT)has been designed.This turbine addresses the issue faced by lift-type vertical axis wind turbines,which struggle to self-start at low wind speeds.Computational fluid dynamics(CFD)simulations have been employed to evaluate both the dynamic self-starting performance and steady-state performance of the DCS-VAWT.Unlike traditional static CFD simulation methods,a passive CFD approach with fluid-solid coupling has been used to simulate the transient self-starting process of the wind turbine.This simulation accurately captures the turbine's transition from a stationary state to steady operation.The results demonstrate that the DCS-VAWT can successfully self-start even at low wind speeds of 5 m/s.The self-starting performance of the DCS-VAWT improves as the diameter of the internal drag-type rotor increases.However,it is worth noting that the steady-state performance decreases with this increase in rotor diameter.Furthermore,the two-bladed DCS-VAWT exhibits better selfstarting performance compared to the three-bladed version due to factors such as rotational inertia and aerodynamic external shape.Through optimization,the two-bladed DCS-VAWT has achieved successful self-starting within 16 seconds under an oncoming wind speed of 5 m/s.The maximum wind energy utilization efficiency was found to be 0.261,achieved at the optimal tip speed ratio of 2.5.These findings contribute to the development of efficient wind energy utilization in urban environments.

关 键 词：自启动性能 稳态性能 升阻结合 垂直轴风力机 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程] TH161[机械工程—机械制造及自动化]