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contributor authorYoo, Seon Oh
contributor authorKim, Hyun Joe
contributor authorLee, Dong Yeon
contributor authorKim, Booki
contributor authorYang, Seung Ho
date accessioned2019-09-18T09:06:51Z
date available2019-09-18T09:06:51Z
date copyright4/29/2019 12:00:00 AM
date issued2019
identifier issn0892-7219
identifier otheromae_141_05_051301
identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4259013
description abstractThis study suggests three different designs of the moonpool to reduce the internal flow of the moonpool. The experimental and numerical studies were performed to improve the dillship's operability by the flow reduction in the moonpool. Based on the previous result of model tests in two-dimensional (2D) wave flume, three different moonpool designs were proposed: design-1: combination of forward recess deck, vertical bulkhead and beach-type wave absorber; design-2: a step-type forward recess deck; and design-3: a forward recess deck with beach-type wave absorber. Experimental study was carried out in the Offshore Engineering Basin for 87 K compact drillship which was 87,000 Mt as design gross tonnage. To verify the experimental results and clearly understand the internal flow of the drillship's moonpool, numerical study was carried out using Reynolds-averaged Navier–Stokes based computational fluid dynamics (CFD) code. From these studies, it was found that all the proposed designs showed significantly reduced internal flow at resonance frequency compared to the original moonpool design of the target drillship, although the characteristic of internal flow reduction was different for each moonpool design. Additional studies were carried out to obtain the improved moonpool design that is expected to further reduce the internal flow of moonpool through CFD. Based on the results of three moonpool designs, the combined one with the step-type recess deck and the wave absorber presents best performance in the viewpoint of flow reduction in the moonpool.
publisherAmerican Society of Mechanical Engineers (ASME)
titleNew Moonpool Design of Drillship for Operability Improvement
typeJournal Paper
journal volume141
journal issue5
journal titleJournal of Offshore Mechanics and Arctic Engineering
identifier doi10.1115/1.4043237
journal fristpage51301
journal lastpage051301-17
treeJournal of Offshore Mechanics and Arctic Engineering:;2019:;volume( 141 ):;issue: 005
contenttypeFulltext


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