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An Experimental Study on Compressibility Effect in Sloshing Phenomenon  

Park, Jun-Soo (Advanced Ship Engineering Research Center, Pusan National University)
Kim, Hyun-Yi (Department of Naval Architecture and Ocean Engineering, Pusan National University)
Lee, Ki-Hyun (Advanced Ship Engineering Research Center, Pusan National University)
Kwon, Sun-Hong (Department of Naval Architecture and Ocean Engineering, Pusan National University)
Jeon, Soo-Sung (Daewoo Shipbuilding & Marine Engineering Co., Ltd.)
Jung, Byoung-Hoon (Hyundai Heavy Industries Co., Ltd.)
Publication Information
Journal of Ocean Engineering and Technology / v.23, no.4, 2009 , pp. 12-18 More about this Journal
Abstract
The present study focused on the compressibility of partially filled fluids in a sloshing tank. Filling ratios ranging from 18% to 26% were used to find compressible impact on a vertical wall. The model test was for 1/25 scale of a 138 K LNGC cargo tank. To investigate the two dimensional phenomenon of sloshing, a longitudinal slice model was tested. A high speed camera was used to capture the flow field, as well as the air pocket deformation. The pressure time history synchronized with the video images revealed the entire compressible process. Three typical impact phenomena were observed: hydraulic jump, flip through, and plunging breaker. In particular, the pressure time history and flow pattern details for flip through and plunging breaker are presented.
Keywords
Sloshing Phenomenon; Compressibility; Hydraulic Jump; Flip Through; Plunging Breaker; Air Pocket;
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