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turbulence power
相关语句
  湍动能
     The turbulence power distribution inner of stadium offers reference for the analysis on the simultaneous wind.
     体育场内部湍动能的分布为脉动风的分析提供了依据.
短句来源
  脉动风速功率
     A Study on the Relationship between Turbulence Power Spectrum and Stochastic Fourier Amplitude Spectrum
     脉动风速功率谱与随机Fourier幅值谱的关系研究
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  相似匹配句对
     the power;
     动力论;
短句来源
     power;
     权力 ;
短句来源
     The turbulence effect of high power laser propagation in the atmosphere
     强激光大气传输时的湍流效应
短句来源
     ON THE DECAY OF TURBULENCE
     湍流耗散的研究
短句来源
     APPROACHING TO TURBULENCE
     走近湍流
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  turbulence power
The evaluation of turbulence power spectra from velocity data acquired by LDA is considered.
      
These estimates suggest that flicker-noise-type turbulence power spectra are formed in the lower corona, and are preserved in the solar-wind acceleration region.
      
Thus, subtracting the average removes not only the static aberrations, but also a significant amount of turbulence power from the data.
      


When Typhoon Jelawat and Prapiroon passed by Shanghai in August 2000, the maximum wind velocity at the height of 10m recorded by Shanghai Pudong Meteorological Bureau was up to 24m/s. Nearly 20 hour long 3 dimensional strong wind data have been measured with an ultrasonic anemometer placed at the height of 20m. The measured wind data are analyzed in this paper to obtain the mean wind velocity and direction, gust factor, turbulence intensity, turbulence integral length, friction velocity and turbulence...

When Typhoon Jelawat and Prapiroon passed by Shanghai in August 2000, the maximum wind velocity at the height of 10m recorded by Shanghai Pudong Meteorological Bureau was up to 24m/s. Nearly 20 hour long 3 dimensional strong wind data have been measured with an ultrasonic anemometer placed at the height of 20m. The measured wind data are analyzed in this paper to obtain the mean wind velocity and direction, gust factor, turbulence intensity, turbulence integral length, friction velocity and turbulence power spectrum. The results clearly demonstrate that the turbulence intensity and gust factor of strong wind are larger than normal. The horizontal turbulence power spectra roughly fit Simiu spectrum, but the vertical spectrum is significantly different from Panofsky spectrum.

20 0 0年 8月当“派比安”和“杰拉华”台风接近上海时 ,浦东气象局的 1 0m高度极值风速记录超过 2 4m/s,笔者用超声风速仪在离地 2 0m高处采集到近 2 0h的三维强风样本。经过对实测风速数据的分析 ,得到了平均风速和风向、阵风因子、湍流度、湍流积分长度、摩阻速度以及湍流功率谱密度函数等强风特性 ,分析结果表明 :近地强风的湍流度和阵风因子较高 ,湍流积分长度约在 80m左右 ,水平 (纵向和横向 )湍流功率谱密度函数与Simiu谱基本一致 ,但垂直湍流功率谱与Panofsky谱相差较大。

The air-flowing field inner of the Hasang stadium is numerically simulated,the results agree with the wind tunnel experiment.Then the three-dimensional numerical simulation of coming-wind of atmospheric boundary layer shows:the different sizes of vortexes exist in flowing mean wind,the main vortex ascends in helix,and varies according to the wind direction.The turbulence power distribution inner of stadium offers reference for the analysis on the simultaneous wind.

哈桑体育场内场均匀流下0°风向1.5m高度和沿东、西向纵截面风流场的数值模拟结果,与风洞实验结果吻合;随后由大气层边界层来流风剖面下的三维数值模拟表明:体育场内部的平均风流动存在有大小不同的旋涡,主旋涡为空间螺旋上升的,并随风向的不同发生变化;体育场内部湍动能的分布为脉动风的分析提供了依据.

>=When Typhoon Jelawat and Prapiroon passed by Shanghai in August 2000, the maximum wind velocity at the height of 10m recorded by Shanghai Pudong Meteorological Bureau was up to 24m/s. Nearly 20-hour-long 3-dimensional strong wind data have been measured with an ultrasonic anemometer placed at the height of 20 m. The measured wind data are analyzed in this paper to obtain wind mean wind velocity and direction, gust factor, turbulence intensity, turbulence integral length, friction velocity and turbulence...

>=When Typhoon Jelawat and Prapiroon passed by Shanghai in August 2000, the maximum wind velocity at the height of 10m recorded by Shanghai Pudong Meteorological Bureau was up to 24m/s. Nearly 20-hour-long 3-dimensional strong wind data have been measured with an ultrasonic anemometer placed at the height of 20 m. The measured wind data are analyzed in this paper to obtain wind mean wind velocity and direction, gust factor, turbulence intensity, turbulence integral length, friction velocity and turbulence power spectrum. The results clearly demonstrate that the turbulence intensity and gust factor of strong wind are larger than normal. The horizontal turbulence power spectra roughly fit Simiu Spectrum, but the vertical spectrum is significantly different from Panofsky spectrum.

当2000年8月“派比安”和“杰拉华”台风接近上海时,浦东气象局的10米高度极值风速记录超过24m/s,本文作者有超声风速仪在离地20米高处采集到近20小时的三维强风样本。经过对实测风速数据的分析,得到了平均风速和风向、阵风因子、湍流度、湍流积分长度、摩阻速度以及湍流功率谱密度函数等强风特性,分析结果表明,近地强风的湍流度和阵风因子较高,湍流积分长度约在80米左右,水平(纵向和横向)湍流功率谱密度函数与Simiu谱基本一致,但垂直湍流功率谱与Panofsky谱相差较大。

 
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