Lift of a wing becomes larger while induced drag becomes smaller when distance between a wing and the ground becomes smaller. This phenomenon is known as the ground effect or surface effect. WIG (Wind in ground effect) is a vehicle cruising near the sea to utilize this effect and to improve the efficiency of flight. In this report, features of WIG is discussed and looking back the history of its developmentat first. Then the numerical simulation is carried out to estimate the ground effect on the vehicle. We changes the control parameters such as attack angle,distance from the sea surface and the speed (Reynolds number) to see their effect on the L/D (ratio of lift to drag) assuming that the sea surface is flat. Next, we change the shape of the sea surface due to the wave and investigate its effect on the flow field and L/D.
地面効果翼機周りの流れの解析
Bvol.25_p(85)-(96)
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