基于数值模拟的复杂地形风场风资源评估方法  

Assessment method of wind resources in complex terrain based on numerical simulation

作　　者：梁思超[1] 张晓东[1] 康顺[1,2] 康雅兰[3] 赵永锋 

机构地区：[1]华北电力大学电站设备状态监测与控制教育部重点实验室,北京102206 [2]西安现代控制技术研究所,陕西西安710065 [3]中国电力工程顾问集团华北电力设计院工程有限公司,北京100120 [4]中国福霖风能工程有限公司,北京100034

出　　处：《空气动力学学报》2012年第3期415-420,共6页Acta Aerodynamica Sinica

基　　金：国家国际科技合作计划资助(2010DFA64600)

摘　　要：与采用线性模型的WAsP软件相比,CFD方法具有可以逼真模拟复杂地形三维风场大气流动的优势,因此成为了复杂地形风场风资源评估的发展方向。为了把CFD软件包FINE/TURBO和带有壁面函数的k-ε湍流模型用于复杂地形地貌风电场的风资源评估和微观选址中去,本文以南澳岛风场作为研究对象,在中性大气条件假设下,对风场区域以30°风向为间隔进行数值模拟。研究采用不同入口边界条件对数值计算结果的影响。比对模拟结果发现,风场中的风加速与湍流强度基本上不随来流条件发生变化。基于这一规律,结合全年测风数据评估风场的风资源分布状况,建立了一套风资源评估的数值模拟及后处理方法,为工程实际提供了有力参考。CFD method has the advantage of well simulating the flow over wind farm of complex terrain, compared with the method of using the software WAsP with linear model, thus becoming the development direction of assessment of wind resources in complex terrain. In order to use the CFD package FINE/TURBO and standard re turbulence model with wall function in the wind resources assessment and micrositing of wind farm in the complex terrain, in this paper, Island Nanao had been simulated in wind directions at intervals of 30 degrees, under the assumption of neutral condition, to investigate the influence of inlet condition on the results. The simulation results show that the wind speed-up and intensity don＇t change essentially under different inlet conditions. Based on this law, with whole year wind data, an assessment method with post processing has been built, providing a strong reference for engineering practice.

关 键 词：湍流模型 微观选址 数值模拟 风资源 大气边界层 

分 类 号：TK89[动力工程及工程热物理—流体机械及工程]