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ID 34914
本文ファイル
著者
Muto, Yasunori
Fujita, Ichiro
キーワード
acoustic-doppler current profilers
groin
interpolation
river flow
velocity distribution
vortex core
NDC
建設工学・土木工学
抄録(英)
A simple but accurate interpolation procedure for obtaining the three-dimensional distribution of three-component velocity data, from moving acoustic doppler current profiler (ADCP) observation data, is proposed. For understanding actual flow structure within a river with complex bathymetry, the three-dimensional mean velocity field provides a basic picture of the flow. For obtaining the three-dimensional distribution of three-component velocity data, in this work, anisotropic gridding was introduced in order to remove the random component of measured velocity data caused by the turbulence of the flow and measurement error. A continuity correction based on the pressure equation was used to reduce both random and systematic errors. The accuracy of the developed method was evaluated using three-dimensional flow simulation data from a detached-eddy simulation (DES). By using the procedure developed, the complex flow structure surrounding the spur dikes section in the Uji River was successfully visualized and explored. The proposed method shows superiorities in both accuracy and consistency for the interpolated velocity field, as compared to the kriging and inverse-distance weighted (IDW) methods.
掲載誌名
Water Resources Research
48巻
5号
出版年月日
2012
出版者
American Geophysical Union.
ISSN
0043-1397
NCID
出版者DOI
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
publisher
権利情報
Copyright 2012 American Geophysical Union. All Rights Reserved.
関連情報URL
部局名
工学研究科