Abstract
Wind forces acting on a ship that harbors behind a big building is studied experimentally using an open channel instead of a wind tunnel. For the purpose of safety mooring, the effect of this wind force must be investigated sufficiently. The flow profile of 1/7 law are made in a channel by means of roughness set on floor. Then, a ship and a building of a fence or a warehouse are set in a flow. A ship is allowed sway only.
Measurements show the following. The length of regurgitation area of a wake of fence is about double of that of a warehouse. When the position of ship is near the building behind, time-averaged wind forces on a ship are pulling forces and when a ship leaves from a building, wind forces change to pushing forces. As the distance between a ship and a building becomes large, time-averaged wind forces become large and fluctuating wind loads become large as well as ship motions do. In addition, in case of a fence, pushing forces of wind on a moored ship is found to be larger a little than on a ship fixed.
