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http://dx.doi.org/10.7837/kosomes.2012.18.4.371

An Experimental Study on Slamming Impact Pressure and Flow Characteristics by Free Fall of Rectangular Marine Structure  

Oh, Seung-Jin (Faculty of Marine Engineering, Mokpo National Maritime Uni.)
Gim, Ok-Sok (Dept. of Guard and Safety, West Regional Headquarters, Korea Coast Guard)
Lee, Gyoung-Woo (Dept. of Naval Architecture & Ocean Engineering, Mokpo National Maritime Uni.)
Cho, Dae-Wan (Faculty of Marine Engineering, Mokpo National Maritime Uni.)
Publication Information
Journal of the Korean Society of Marine Environment & Safety / v.18, no.4, 2012 , pp. 371-377 More about this Journal
Abstract
This paper presents an experimental investigation to figure out slamming impact pressure and flow characteristics of a rectangular Marine structure($800{\times}250{\times}50mm^3$) in free fall. The flow field has been obtained by 2-frame grey level cross correlation PIV(Particle Image Velocimetry) method, the impact pressure of the free fall model by a pressure acquisition system(Dewatron). The angles between a model and the free surface are adapted $10^{\circ}$ and $20^{\circ}$ respectively. Velocity field of water exit has higher better than water entry. The highest point, P2 of impact pressure under the bottom of the model has been appeared about 6 % higher values at 20 degrees than 10 degrees.
Keywords
Slamming; Free fall; Impact pressure; Flow field; Water entry; Water exit;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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