A Study on Slamming Impact Pressure

J. Ocean Eng. Technol. 2009;23(1):67-73.

Park Jun-Soo,Oh Seung-Hoon,Kwon Sun-Hong,Chung Jang-Young

Advanced Ship Engineering Research Center Pusan National University,Naval Architecture & Ocean Enginnering Pusan National University,Naval Architecture & Ocean Enginnering Pusan National University,Education Program for Intelligence Based Ship and Offs

슬래밍 충격 압력에 대한 연구

박준수,오승훈,권순홍,정장영

부산대학교 첨단조선공학연구센터,부산대학교 조선해양공학과,부산대학교 조선해양공학과,조선해양.기자재설계전문가양성사업단

Keywords: Slamming, Pneumatic cylinder, Impact pressure coefficient, Air pocket, Jet spray, Synchronization

핵심용어: 슬래밍, 공기압 실린더, 충격 압력 계수, 에어 포켓, 제트 스프레이, 동기화

Abstract

This study presents the results of a slamming experiment using a pneumatic cylinder. The employment of the pneumatic cylinder showed a relatively good repeatability when the results were compared with those of other slamming devices. The experiment was done for various incident angles. An air pocket was believed to cause a reduction in the magnitude of the impact pressure with an incident angle of $0^{circ}$ for the water entry. A high speed camera was used in an attempt to locate the time of the contact between the bottom of the specimen and the free surface. It seemed that the maximum pressure occurred before the water contacted the bottom of the specimen.