中文摘要：

以复杂地形风电场微观选址问题为背景,通过对孤立山丘、断崖和山谷复杂地形的数值模拟,研究坡度和粗糙度对不同地形的风场影响,并在数值模拟结果的基础上进行了风场的微观选址分析.通过对三种不同地形模型进行数值分析,在坡度越大时山顶处的风速就越大,粗糙度越大风速就越小,并容易产生回流区.对于山丘模型,在背风面坡脚处湍流强度最大,风机应选址在山顶或半山坡以上;对于断崖模型,在山顶处湍流强度最大,风机适宜选址在坡顶和坡顶水平后方;而对于山谷模型,在谷底处湍流强度最大,风机适宜选址在坡顶处.

英文摘要：

Taking the problem of microscopic location selecting of wind farm on complex terrain as back ground and using the numerical simulation of complex terrain, such as isolated hill, escarpment, and val- ley, the effect of slope and roughness on the wind flowfield over various terrains is studied and based on the results of the numerical simulation, the analysis of microscopic location selecting of wind farm is con- ducted. By means of analyzing the three different terrain models, it can be concluded that the greater the slope is, the greater the wind speed near the slope top will be and the greater the roughness is, the less the wind speed will be there, and a back flow zone will readily take place. For the isolated hill model, the lar- gest turbulence intensity is at the downwind bottom of slope, so that the wind turbine should be fixed at the hill top or halfway on the slope. For the bluff model, as the largest turbulence intensity is at the bluff top, the wind turbine should be installed at the top of slope or behind the top horizontally. For the valley model, the largest turbulence intensity is at the bottom of the valley, therefore the wind turbine should be fixed at its top.