http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
김영문,김종수,하정굉윤 대한건축학회 1995 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.15 No.2
In order to investigate the torsional vibration olaeroelastic model to wind load, square section of aeroelastic model with aspect ratio, H of 10 were used in the test where B is the breadth normal to the flow and D is the depth in the flow direction. The wind tunnel test was carried out in turbulent boundary layer flow over suburban area. Rapidly increased torsional vibration phenomenon was observed, which might be considered as aeroelastic instability phenomenon.
김영문,김종수,황규석,중촌효행,하정굉윤 대한건축학회 1995 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.15 No.2
Physical modeling of wind effects on high-rise buildings, requires modeling of veined flow representative of natural wind in atmospheric boundary layer wind tunnel. Tn this paper, used the boundary layet wind tunnel of Tokyo Denki University, the desired mean velocity profile, turbulence intensity, and power spectrum measured by augmentation device such as tripping wall, roughness block. The experimental results of mean velocity profile are well fitted the value of power law.
Non-stationary and non-Gaussian characteristics of wind speeds
Yi Hui,Bo Li,Hiromasa Kawai,Qingshan Yang 한국풍공학회 2017 Wind and Structures, An International Journal (WAS Vol.24 No.1
Non-stationarity and non-Gaussian property are two of the most important characteristics of wind. These two features are studied in this study based on wind speed records measured at different heights from a 325 m high meteorological tower during the synoptic wind storms. By using the time-frequency analysis tools, it is found that after removing the low frequency trend of the longitudinal wind, the retained fluctuating wind speeds remain to be asymmetrically non-Gaussian distributed. Results show that such non-Gaussianity is due to the weak-stationarity of the detrended fluctuating wind speed. The low frequency components of the fluctuating wind speeds mainly contribute to the non-zero skewness, while distribution of the high frequency component is found to have high kurtosis values. By further studying the decomposed wind speed, the mechanisms of the non-Gaussian distribution are examined from the phase, turbulence energy point of view.
Non-stationary and non-Gaussian characteristics of wind speeds
Hui, Yi,Li, Bo,Kawai, Hiromasa,Yang, Qingshan Techno-Press 2017 Wind and Structures, An International Journal (WAS Vol.24 No.1
Non-stationarity and non-Gaussian property are two of the most important characteristics of wind. These two features are studied in this study based on wind speed records measured at different heights from a 325 m high meteorological tower during the synoptic wind storms. By using the time-frequency analysis tools, it is found that after removing the low frequency trend of the longitudinal wind, the retained fluctuating wind speeds remain to be asymmetrically non-Gaussian distributed. Results show that such non-Gaussianity is due to the weak-stationarity of the detrended fluctuating wind speed. The low frequency components of the fluctuating wind speeds mainly contribute to the non-zero skewness, while distribution of the high frequency component is found to have high kurtosis values. By further studying the decomposed wind speed, the mechanisms of the non-Gaussian distribution are examined from the phase, turbulence energy point of view.