摘要
针对风场局部地区机组发电能力不足、技术改造效果不确定的问题,应用Global mapper、WAsP、Matlab等软件拟合出局部地形物理模型。以风场实测数据作为物理模型的入流条件,利用UDF自定义速度入口和湍流入口,通过CFD计算出12种来流下各改造地形的机组轮毂高度处的风速、湍流度。与实际风数据比较后发现,该物理模型具有较高的精度,同时改造地形可有效增加下风向的风速、减小湍流度,从而取得较好的经济效益。
As the effect of reconstructing terrain to increase generating capacity is uncertain,GlobalMapper,WAsP and Matlab were applied to fit the physical model of local terrain.We took measured data as the inflow condition of physical model and set velocity-inlet with turbulence by UDF.Under 12 kinds of inflow,the wind speed and turbulence intensity at height of hub were calculated by CFD.The accuracy of model was checked by comparing computational data with measured data.It is proved that reconstruction of terrain could increase wind speed and reduce turbulence intensity effectively.So,it can get more economic benefits.
出处
《水电能源科学》
北大核心
2016年第2期212-216,共5页
Water Resources and Power
基金
中丹国际科技合作专项项目(2014DFG62530)
国网南瑞科技项目
南通市科技项目(BK2014028)
关键词
风电场
地形改造
空气动力场
CFD模拟
模型校验
发电量估算
wind farm
terrain reconstruction
aerodynamic field
CFD simulation
model validation
estimation of power generation
