风力机尾流扰动对大气底层边界层的影响

doi:10.11930/j.issn.1004-9649.201708056

中国电力 ›› 2018, Vol. 51 ›› Issue (6): 144-149.DOI: 10.11930/j.issn.1004-9649.201708056

风力机尾流扰动对大气底层边界层的影响

吴正人¹, 李非¹, 路婷婷¹, 刘梅²

1. 华北电力大学能源与动力工程学院, 河北保定 071003;
2. 华北电力大学经济管理系, 河北保定 071003

收稿日期:2017-08-21 修回日期:2018-03-26 出版日期:2018-06-05 发布日期:2018-06-12
作者简介:吴正人(1973-),男,副教授,从事流体动力学理论及应用分析,E-mail:zhengren_wu@163.com
基金资助:
中央高校基本科研业务费专项资金资助项目（2015MS114）。

Effect of Wind Turbine Tail Flow Disturbance on the Atmospheric Bottom Boundary Layer

WU Zhengren¹, LI Fei¹, LU Tingting¹, LIU Mei²

1. School of Energy Power and Mechanical Engineering, North China Electric Power University, Baoding 071003, China;
2. Department of Economics and Management, North China Electric Power University, Baoding 071003, China

Received:2017-08-21 Revised:2018-03-26 Online:2018-06-05 Published:2018-06-12
Supported by:
This work is supported by Research Funds for the Central Universities (No.2015MS114).

摘要/Abstract

摘要： 风力机尾流湍流特性及其对大气底层边界层的影响至关重要，采用雷诺平均N-S方程（RANS）对5MW单台风力机在相同速度廓线不同温度层结下的尾流进行数值模拟，分析风力机下游速度、温度和湍流强度气象因素在不同设置下的变化及特征，得到风力机运行对大气底层边界层的影响机理，为高效率风电场的建立提供一定的理论基础。研究表明：气流经过风力机后，速度明显衰减，且在轮毂附近衰减最大；不同稳定层结下的温度变化差异大；同时风力机叶片旋转产生的涡相互影响，使得湍流扰动加强。

关键词: 风力机, 温度层结, 湍流扰动, 气候效应

Abstract: The turbulent characteristics of wind turbine tail flow and its influence on the lower boundary layer of the atmosphere are of great importance. In this paper, the tail flow of single 5MW wind turbine under the same velocity profile but different temperature layers is numerically simulated by using Reynolds Average N-S equation (RANS). By analyzing the variation and characteristics of the meteorological factors of wind turbine downstream velocity, temperature and turbulence intensity in different settings, the influence mechanism of wind turbine operation on the lower boundary layer of atmosphere is obtained, which provides certain theoretical basis for the establishment of high efficiency wind farm. The results show that the wind flow velocity decreases significantly after passing through the wind turbine with the maximum attenuation occurrence near the hub. The temperature varies greatly under different stable layers. Meanwhile, the vortex produced by the blade rotation of the wind turbine interacts with each other, which will intensify the turbulence disturbance.

Key words: wind turbine, temperature stratification, turbulence disturbance, climate effect

中图分类号:

TM614

吴正人, 李非, 路婷婷, 刘梅. 风力机尾流扰动对大气底层边界层的影响[J]. 中国电力, 2018, 51(6): 144-149.

WU Zhengren, LI Fei, LU Tingting, LIU Mei. Effect of Wind Turbine Tail Flow Disturbance on the Atmospheric Bottom Boundary Layer[J]. Electric Power, 2018, 51(6): 144-149.

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风力机尾流扰动对大气底层边界层的影响

Effect of Wind Turbine Tail Flow Disturbance on the Atmospheric Bottom Boundary Layer

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风力机尾流扰动对大气底层边界层的影响

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