대기 경계층 풍동실험에 의한 평균풍속의 수직분포 ( Measurement of Mean Velocity Profile by Atmospheric Boundary Layer Wind Tunnel )

Physical modelling of wind effects on highrise buildings requires modelling of wind flow representative of natural wind in atmospheric boundary layer wind tunnel. In this paper, to obtain the desired mean velocity profile, two kinds of turbulence generation are used: active generator such as jets blowing into the main stream creating the desired turbulence patterns and changing the momentum of the flow; and passive devices such as tripping wall, spires and suface roughness blocks on the flow of the tunnel. The experimental results are well fitted with the value of power law.