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고속 활주선의 선형에 따른 저항 성능 및 규칙파 중 운동 성능 고찰Effects of Hull Form Variations on Resistance and Seakeeping Performance of Planing Hulls with and without Incoming Regular Waves

Other Titles
Effects of Hull Form Variations on Resistance and Seakeeping Performance of Planing Hulls with and without Incoming Regular Waves
Authors
김동진김선영김성환서정화이신형
Issue Date
30-9월-2014
Publisher
대한조선학회
Keywords
Planing hull; High speed model test; Resistance performance; Motion response; Savitskys formula
Citation
대한조선학회논문집, v.51, no.5, pp 369 - 379
Pages
11
Journal Title
대한조선학회논문집
Volume
51
Number
5
Start Page
369
End Page
379
URI
https://www.kriso.re.kr/sciwatch/handle/2021.sw.kriso/8053
DOI
10.3744/SNAK.2014.51.5.369
Abstract
Planing hull forms have significant influences on those hydrodynamic performances in calm water and in waves. Therefore, the hydrodynamic performance of a planing vessel should be predicted by model tests or theoretical calculations, and be confirmed whether it shows the performance requirements at the design stage. In this study, four planing hull forms are designed with the goal of the improvement of resistance and seakeeping performance, and 1/6.5 scale model tests are carried out in Seoul National University towing tank. The effects of design parameters such as length-to-beam ratio, deadrise angle and forebody shape on the hydrodynamic performance are investigated, based on model test results. Running attitude and resistance of model ships in calm water are also estimated by empirical formulae proposed by Savitsky(1964/2007,2012), and compared with the model test results. It is shown that calm water performance of non-prismatic planing hulls can be predicted well by Savitsky(2012)s formula which improves the original Savitsky(1964/2007)s formula by taking into account the variations of deadrise angles, and the actual angles between the hull bottom and the free surface. confirmed whether it shows the performance requirements at the design stage. In this study, four planing hull forms are designed with the goal of the improvement of resistance and seakeeping performance, and 1/6.5 scale model tests are carried out in Seoul National University towing tank. The effects of design parameters such as length-to-beam ratio, deadrise angle and forebody shape on the hydrodynamic performance are investigated, based on model test results. Running attitude and resistance of model ships in calm water are also estimated by empirical formulae proposed by Savitsky(1964/2007,2012), and compared with the model test results. It is shown that calm water performance of non-prismatic planing hulls can be predicted well by Savitsky(2012)s formula which improves the original Savitsky(1964/2007)s formula by taking into account the variations of deadrise angles, and the actual angles between the hull bottom and the free surface.
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