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Title: 強風時の風速変動の時空間相関について
Other Titles: THE SPACE TIME CORRELATION OF WIND SPEED FLUCTUATION IN HIGH WIND
Authors: 石﨑, 溌雄  KAKEN_name
光田, 寧  KAKEN_name
林, 泰一  KAKEN_name
Author's alias: ISHIZAKI, Hatsuo
MITSUTA, Yasushi
HAYASHI, Taiichi
Issue Date: 1-Apr-1985
Publisher: 京都大学防災研究所
Journal title: 京都大学防災研究所年報. B = Disaster Prevention Research Institute Annuals. B
Volume: 28
Issue: B-1
Start page: 407
End page: 414
Abstract: The space time correlations of natural wind are investigated using the horizontal windspeed fluctuation measured in the observation net work where the observational points are ar-ranged two-dimensionally. The isopleths of space correlation coefficients are approximatedby the ellipes. The fitness of this approximation is fairly good. The aspect ratio of these ellipsesis 3 to 4, when the averaging time of wind speed is 1.5 sec. The aspect ratio increases withthe wind speed and the averaging time. Talor's frozen eddy hypothesis is checked by com-paring the traveling distance of turbulent eddy. The traveling speed is estimated 1.14 timesof mean wind speed.
URL: http://www.dpri.kyoto-u.ac.jp/nenpo/nenpo.html
URI: http://hdl.handle.net/2433/70718
Appears in Collections:No.28 B-1

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