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http://dx.doi.org/10.9765/KSCOE.2021.33.3.122

Estimation and Analysis of the Vertical Profile Parameters Using HeMOSU-1 Wind Data  

Ko, Dong-Hui (Coastal Development and Ocean Energy Research Center, Korea Institute of Ocean Science and Technology)
Cho, Hong-Yeon (Marine Big-data Center, Korea Institute of Ocean Science and Technology, University of Science and Technology)
Lee, Uk-Jae (Department of Civil and Environmental Engineering, Wonkwang University)
Publication Information
Journal of Korean Society of Coastal and Ocean Engineers / v.33, no.3, 2021 , pp. 122-130 More about this Journal
Abstract
A wind-speed estimation at the arbitrary elevations is key component for the design of the offshore wind energy structures and the computation of the wind-wave generation. However, the wind-speed estimation of the target elevation has been carried out by using the typical functions and their typical parameters, e.g., power and logarithmic functions because the available wind speed data is limited to the specific elevation, such as 2~3m, 10 m, and so on. In this study, the parameters of the vertical profile functions are estimated with optimal and analyzed the parameter ranges using the HeMOSU-1 platform wind data monitored at the eight different locations. The results show that the mean value of the exponent of the power function is 0.1, which is significantly lower than the typically recommended value, 0.14. The values of the exponent, the friction velocity, and the roughness parameters are in the ranges 0.0~0.3, 0~10 (m/s), and 0.0~1.0 (m), respectively. The parameter ranges differ from the typical ranges because the atmospheric stability condition is assumed as the neutral condition. To improve the estimation accuracy, the atmospheric condition should be considered, and a more general (non-linear) vertical profile functions should be introduced to fit the diverse profile patterns and parameters.
Keywords
wind speed estimation; power profile function; logarithmic profile function; HeMOSU-1; wind-speed parameters;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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