Experimental Analysis of slam-induced pressure on the bow-segment of surface ship

Abstract

Today, determination of slam-induced pressure is one of the interested issue of the researchers. Water entry of bow section of a ship is experimentally examined, in order to investigation of slamming pressure. This experimental study is distinguished because of the effect of longitudinal curvature in the ship shape body. A generalized Wagner theory is used to compare of experimental results. The predicted slamming pressure of experimental results is approximately 25 percent lower than Wagner theory because of differences in the assumption of theories. Longitudinal curvature of ships is ignored in the analytical method which is change of flow regime and produce of flow separation and air cavity. Thus, analytical method based on ignoring of longitudinal curvature cannot precinct predication of slamming pressure and a water entry test or 3D numerical method must be performed.

Keywords

• slamming
• experiment
• water entry
• bow-segment