风功率密度

由中国气象科学研究院绘制的全国年平均风功率密度分布图表明了我国风能资源储备非常丰富，风能利用前景广阔。

The distribution of annual average wind power density of China drawn by Chinese Academy of Meteorological Sciences shows that wind energy in China is available and plentiful .

通过对韦布尔分布的分析，计算了各个高度上风电场的平均风功率密度、有效平均风功率密度和可利用小时数等风能资源特性参数，为当地的风能开发提供分析基础。

According to the analysis on local Weibull distribution , average wind power density and effective average wind power density as well as utilization hours of wind farm at each height were obtained . The results are provided for wind energy development in Xinjiang region .

通过对风功率密度进行分析，考虑到风机工作风速区间，提出有功风功率密度概念。

Taken the cut-in and cut-off wind speed of wind turbine into account , a concept named active wind power density was presented .

分析了测风塔各高度风速日、年变化，风向频率年月变化。计算分析了测风塔不同高度平均风速、风功率密度、有效小时数等风能参数。

Analyses and computation are made of the wind energy parameters measured at the tower such as the daily and annual variation of wind speed , the monthly and annual variation of wind direction frequencies , the mean wind and wind power density , effective hours of wind speed , etc.

高层建筑的扭转风荷载功率谱密度

Power Spectral Densities of Torsional Wind Loads on Tall Buildings

首先建立了脉动风荷载的功率谱密度函数矩阵。

The matrix of power spectral density function of fluctuating wind load is established first .

简要介绍并比较了三类分析中有代表性的方法，即一般离散突风法、功率谱密度法和统计离散突风法。

The representive methods of each group , i.e.discrete gust method , power spectral density method , and statistical discrete gust methods are briefly discussed .

对风的研究是进行风振响应研究的前提，风的基本特征包括平均风速剖面、湍流强度、脉动风功率谱密度函数、脉动风的空间相关性以及极端风速的概率统计特性。

Research on wind is the precondition of wind response , then the section plane of static wind , intensity of onflow , PSD function and correlativity of dynamic wind are involved in .

他将风荷载分为平均风和脉动风两部分，把其中的脉动风看成一平稳高斯随机过程，并提出了脉动风的功率谱密度模型。

The wind load is evaluated as mean and fluctuating components .