Turbulent Characteristics of Sea Wind and Numerical Simulation of Flow Around a Floating Body

Abstract

This research is concerned with the characteristics of wind velocity on through the measurement of wind velocity of nearby sea surface continuously by using a multichannel anemomaster.The main conclusion from this study is as follows; the coefficient of friction calculated by assuming Karman constant as 0.4 ranges between 0.01 and 0.07. Furthermore, there is linear relation between roughness parameter and the coefficient of friction. Wind velocity fluctuation spectra showed that it differs depending upon the height from sea level. A strong eddy occurs at the back of a floating body when the wind velocity measured used in numerical modelling the response of the floating body, which implies that this fact must be taken into account in wind load estimation.