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 k-∈ 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.%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κ-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.
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