Abstract
A vertical mixing device in a semi-enclosed bay has been developed in a series of studies. The device utilizes the incoming wave energy as a driving force. However, in the previous studies, the device was fixed in the sea like a sea wall. In this study, a floating body on the sea surface is intended as a vertical mixing device. Various cross sections of the floating device have been examined extensively to find out the most effective one. Two major methods are presumed. One is to keep a quasi-fixed state to expect the similar effect to the previous fixed device. The other is to take advantage of the floating body dynamics for the vertical mixing. It was found out that the latter method is much more effective.
