Development of Air Side Loop Method Applied Wind-wave Tank

Abstract

It is important to use a wind-wave tank for investigating the mechanism of the wind-wave development. Although the wind-wave tank is generally used for investigating the mechanism, the maximum fetch in the wind-wave tank is limited by the length of the wind-wave tank, where fetch means the length of the water surface by air blowing. Therefore, the purpose of this study is to develop the fetch extension method, which we called the air-side loop method. In this method, the vertical distribution of streamwise mean wind speeds at the air outlet is reproduced at the air inlet by the shutter. The results show that the air flow in long fetch condition can be reproduced by the method.