Abstract
The objective of this study is to understand the formation of water splash by the frog diving into water.Splash formation by the frog diving was investigated by using high speed camera.The characteristics of frog diving were studied with model experiments.The model experiments obtained the influence of both body shape and hydrophihcity as surface condition.Body shape was investigated with the influence of tail shape of body and NACA 0012 airfoil in cross-section.Frog diving caused the small water splash formation with air cavity under the water.The formation of splash was related to the film-flow caused by body impacted to water surface.The fore limb of frog set along the body during the dive.This is the reason to inhibit the formation of separation of film-flow.The strong hydrophihc body of frog was caused film separation.
