您好,欢迎来到中国测试科技资讯平台!

首页> 《中国测试》期刊 >本期导读>基于大涡模拟的大型风力机在剪切来流条件下的尾流研究

基于大涡模拟的大型风力机在剪切来流条件下的尾流研究

230    2024-05-24

免费

全文售价

作者:孙芳锦1, 邓富河1, 贺伟盼1, 曾倩1, 张大明2,3

作者单位:1. 桂林理工大学土木与建筑工程学院,广西 桂林 541006;
2. 广西嵌入式技术与智能系统重点实验室,广西 桂林 541006;
3. 桂林理工大学信息科学与工程学院,广西 桂林 541006


关键词:大型风力机;尾流;大涡模拟;剪切来流


摘要:

来流条件对大型风力机尾流特性影响重大,由于地面摩擦导致来流风在竖直方向有速度差异进而形成剪切风。为研究剪切来流风带来尾流特性变化,采用5 MW风力机作为研究对象,两台大型风力机串列的布置方式,基于大涡模拟(LES),模拟大型风力机不同间距在剪切来流风下尾流特性变化。结果表明:剪切来流风经过风力机,随着串列间距增大,对下游风力机风压扰动减小;且不同间距下,共同特点是轮毂处风压比其他地方更大,轮毂后风速损失较叶轮其他位置更加严重;不同间距工况下,尾流速度恢复处在5D工况相较于所有工况恢复距离最远,甚至在10D处之后才恢复,而8D工况时,在下游9D处恢复,11D工况时,在下游6D处恢复,说明间距越大,尾流速度恢复处位置越近。


Study on the wake of large wind turbines under shear flow conditions based on large eddy simulation
SUN Fangjin1, DENG Fuhe1, HE Weipan1, ZENG Qian1, ZHANG Daming2,3
1. School of Civil and Architectural Engineering, Guilin University of Technology, Guilin 541006, China;
2. Guangxi Key Laboratory of Embedded Technology and Intelligent System, Guilin 541006, China;
3. School of Information Science and Engineering, Guilin University of Technology, Guilin 541006, China
Abstract: The incoming flow condition has a great influence on the wake characteristics of large wind turbine. Due to the ground friction, the velocity difference of the incoming wind in the vertical direction leads to the shear wind. In order to study the change of wake characteristics caused by shear inflow wind, 5 MW wind turbine was used as the research object. Based on large eddy simulation (LES), the wake characteristics of large wind turbine with different spacing under shear inflow wind were simulated. The results show that the shear inflow wind passes through the wind turbine, and the wind pressure disturbance on the downstream wind turbine decreases with the increase of the tandem spacing. Under different spacing, the common feature is that the wind pressure at the hub is larger than that at other locations, and the wind speed loss behind the hub is more serious than that at other locations of the impeller. Under different spacing conditions, the recovery distance of wake velocity at 5D condition is the farthest compared with all conditions, and it is not recovered until 10D. Under 8D condition, it is recovered at 9D downstream, and under 11D condition, it is recovered at 6D downstream, indicating that the larger the spacing is, the closer the position of wake velocity recovery is.
Keywords: large wind turbine;tail flow;large eddy simulation;shear flow
2024, 50(5):130-137  收稿日期: 2022-01-12;收到修改稿日期: 2022-05-24
基金项目: 国家自然科学基金(52178468,52268023);广西自然科学基金项目(2019GXNSFAA245037,2023GXNSFAA026418); 广西青年创新人才科研专项(桂科 AD19245012);广西建筑新能源与节能重点实验室自主课题(桂科能 19-J-21-14);广西岩土力学与工程重点实验室项目(桂科能 19-Y-21-2);桂林理工大学科研启动基金(GUTQGJJ2019042, GUTQDJJ2019041)
作者简介: 孙芳锦(1981-),女,辽宁沈阳市人,教授,博士,主要从事绿色建筑能源与工程应用、结构安全状态与评估。
参考文献
[1] 李万润, 栾雪涛, 王雪平, 等. 基于实测数据的西北地区风电场风场及尾流特性分析[J]. 东南大学学报(自然科学版), 2018, 48(4): 699-705
LI W R, LUAN X T, WANG X P, et al. Analysis of wind field and wake characteristics of wind farm in Northwest China based on measured data[J]. Journal of Southeast University(Natural Science Edition), 2018, 48(4): 699-705
[2] 杨立国, 严亚林, 李宏海. 某滑雪场复杂山地地形风场的风洞试验与数值模拟研究[J]. 建筑结构, 2020, 50(11): 135-140
YANG L G, YAN Y L, LI H H. Wind tunnel test and numerical simulation of complex mountainous terrain wind field in a ski resort[J]. Building Structure, 2020, 50(11): 135-140
[3] 孙芳锦, 贺伟盼, 邓富河, 等. 大型风力机变桨角度对尾流特性影响的研究[J]. 中国测试, 2022, 48(8): 9-16.
SUN F J, HE W P, DENG F H, et al. Research on the effect of pitch angle of large wind turbine on wake characteristics[J]. China Measurement & Test, 2022, 48(8): 9-16.
[4] 刘智益, 陈瑶, 高晓霞, 等. 多风力机尾流干扰模型特性研究与分析[J]. 中国测试, 2021, 47(5): 136-144.
LIU Z Y, CHEN Y, GAO X X, et al. Study and analysis of wake disturbance model characteristics of multi-wind turbine[J]. China Measurement & Test, 2021, 47(5): 136-144.
[5] 王兵, 张会强, 王希麟, 等. 不同亚格子模式在后台阶湍流流动大涡模拟中的应用[J]. 工程热物理学报, 2003, 24(1): 157-160
WANG B, ZHANG H Q, WANG X L, et al. Large eddy simulation of backward-facing step turbulent flow using different sgs models[J]. Journal of Engineering Thermophysics, 2003, 24(1): 157-160
[6] 张亚光. 基于大涡模拟的单台大型风力机尾流特性研究[D]. 兰州: 兰州理工大学, 2019.
ZHANG Y G. Study of wake characteristics of single large scale wind turbine based on large-eddy simulation[D]. Lanzhou: Lanzhou University of Technology, 2019.
[7] 杨瑞, 王小丽, 许世海, 等. 水平轴风力机尾流场的特性分析[J]. 兰州理工大学学报, 2016, 42(2): 57-61
YANG R, WANG X L, XU S H, et al. Analysis of wake flow field characteristics of horizontal-axis wind turbine[J]. Journal of Lanzhou University of Technology, 2016, 42(2): 57-61
[8] 钟宏民. 综合Lagrangian动力大涡模拟与致动线法的风力机尾流数值模拟研究[D]. 成都: 电子科技大学, 2015.
ZHONG H M. Lagrangian dynamic large-eddysimulation of wind turbine wakescombined with an actuator linemethod[D]. Chengdu: University of Electronic Science and Technology of China, 2015.
[9] 温文, 邓胜祥. 不同串列布置间距下2 MW风力机尾流的研究[J]. 太阳能, 2019(1): 57-60
[10] 陈荣盛, 张礼达, 任腊春. 基于相似理论的风力机力特性分析[J]. 水力发电, 2008, 34(6): 92-94
CHEN R S, ZHANG L D, REN L C. Characteristic analysis of wind turbine based on similarity theory[J]. Water Power, 2008, 34(6): 92-94
[11] SCRENSEN N N, BECHMANN A, RETHORE P E, et a1. Near wake Reynolds-averaged Navier-Stokes predictions of the wake behind the MEXICO rotor in axial and yawed flow conditions[J]. Wind Energy, 2014, 17(1): 75-86
[12] MO J O, CHOUDHRY A, ARJOMANDI M, et a1. Effects of wind speed changes on wake instability of a wind turbine in a virtual wind tunnel using large eddy simulation[J]. Journal of Wind Engineering and Industrial Aerodynamics, 2013, 117: 38-56
[13] OKA S, ISHIHARA T. Numerical study of aerodynamic characteristics of a square prism in a uniform flow[J]. Journal of Wind Engineering and Industrial Aerodynamics, 2009, 97(11-12): 548-559.
[14] 高晓霞, 王腾渊, 赵飞, 等. 基于激光雷达扫描数据的湍流强度影响下风力机尾流特性研究[J]. 太阳能学报, 2019, 40(12): 3645-3650
GAO X X, WANG T Y, ZHAO F, et al. Study on influence of turbulence intensity on wind turbine wake characteristics using lidars scanning data[J]. Acta Energiae Solaris Sinica, 2019, 40(12): 3645-3650