|
KMID : 1024520170260090999
|
|
Journal of the Environmental Sciences
2017 Volume.26 No. 9 p.999 ~ p.1011
|
|
|
A Study on the Mean Flow Velocity Distribution of Jeju Gangjung-Stream using ADCP
|
|
Yang Se-Chang
Kim Yong-Seok
Yang Sung-Kee
Kang Myung-Su
Kang Bo-Seong
|
|
|
Abstract
|
|
|
|
In this study, the Chiu-2D velocity-flow rate distribution based on theoretical background of the entropy probability method was applied to actual ADCP measurement data of Gangjung Stream in Jeju from July 2011 to June 2015 to predict the parameter that take part in velocity distribution of the stream. In addition, surface velocity measured by SIV (Surface Image Velocimeter) was applied to the predicted parameter to calculate discharge. Calculated discharge was compared with observed discharge of ADCP observed during the same time to analyze propriety and applicability of depth of water velocity average conversion factor. To check applicability of the predicted stream parameter, surface velocity and discharge were calculated using SIV and compared with velocity and flow based on ADCP. Discharge calculated by applying velocity factor of SIV to the Chiu-2D velocity-flow rate distribution and discharge based on depth of water velocity average conversion factor of 0.85 were 0.7171 m3/sec and 0.5758 m3/sec, respectively. Their error rates compared to average ADCP discharge of 0.6664 m3/sec were respectively 7.63% and 13.64%. Discharge based on the Chiu-2D velocity-flow distribution showed lower error rate compared to discharge based on depth of water velocity average conversion factor of 0.85.
|
|
|
KEYWORD
|
|
|
Chiu, Entropy, ADCP, Surface image velocimeter
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|