同济大学学报（自然科学版）2012，Vol.40Issue(10)：1491-1497,7.DOI:10.3969/j.issn.0253-374x.2012.10.010
基于台风“梅花”的近地层湍流积分尺度实测分析
Field Measurements About Integral Scales of Near-ground Turbulence During Typhoon ‘Muifa'
摘要
Abstract
Variation of turbulence integral scales with mean wind speed, observation height and average time interval are analyzed based on the long time field measured data recorded respectively at 10, 20 and 40 meters above the ground in Pudong New Area of Shanghai during typhoon 'Muifa'. The results show that turbulence integral scales Lxu, Lxu and Lxu, increase with mean wind speed and observation height. The ratios of the turbulence scale among the turbulence components averaged for all 10 min data are 1:0. 54:0.07, 1:0.65: 0.11 and 1:0.73:0.1 respectively at 10 m, 20 m and 40 m. At the same level,both of Lxu and Lxu increase with average time interval, but Lxw almost remains constant. The correlation coefficients of the vertical scales at two levels are much lower than those of the horizontal scales.关键词
台风"梅花"/现场实测/湍流积分尺度/平均时距/相关系数Key words
typhoon'Muifa'/ field measurement/ turbulence integral scale/ average time interval/ correlation coefficient分类
建筑与水利引用本文复制引用
王旭,黄鹏,顾明..基于台风“梅花”的近地层湍流积分尺度实测分析[J].同济大学学报（自然科学版）,2012,40(10):1491-1497,7.基金项目
国家自然科学基金重大研究计划重点项目(90715040) （90715040）
国家自然科学基金面上项目(51178352) （51178352）
