Resistance reduction on trimaran ship model by biopolymer of eel slime

IF 1.2 Q3 ENGINEERING, MARINE

Journal of Naval Architecture and Marine Engineering Pub Date : 2015-12-30 DOI:10.3329/JNAME.V12I2.19549

Y. Yanuar, G. Gunawan, M. A. Talahatu, R. T. Indrawati, A. Jamaluddin

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引用次数: 1

Abstract

Resistance reduction in ship becomes an important issue to be investigated. Energy consumption and its efficiency are related toward drag reduction. Drag reduction in fluid flow can be obtained by providing polymer additives, coating, surfactants, fiber and special roughness on the surface hull. Fish skin surface coated with biopolymers viscous fluid (slime) is one method in frictional resistance reduction. The aim of this is to understanding the effect of drag reduction using eel slime biopolymer in unsymmetrical trimaran ship model. The Investigation was conducted using towing tank test with variation of velocity. The dimension of trimaran model are L = 2 m, B = 0.20 m and T = 0.065 m. The ship model resistance was precisely measured by a load cell transducer. The comparison of resistance on trimaran ship model coated and uncoated by eel slime are shown on the graph as a function of the total drag coefficient and Froude number. It is discovered the trimaran ship model by eel slime has higher drag reduction compared to trimaran with no eel slime at similar displacement. The result shows the drag reduction about 11 % at Fr 0.35.

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鳗鱼黏液生物聚合物降低三体船模型阻力

船舶减阻成为研究的重要课题。能源消耗及其效率与减阻有关。通过在船体表面提供聚合物添加剂、涂层、表面活性剂、纤维和特殊粗糙度，可以减少流体流动的阻力。鱼皮表面涂覆生物聚合物黏液(黏液)是降低鱼皮摩擦阻力的一种方法。目的是了解在非对称三体船模型中使用鳗鱼黏液生物聚合物的减阻效果。采用随速度变化的拖曳槽试验进行了研究。三体船模型的尺寸为L = 2 m, B = 0.20 m, T = 0.065 m。用称重传感器精确测量了船模的电阻。图中给出了涂覆和未涂覆鳗鱼泥的三体船模型阻力随总阻力系数和弗劳德数的函数关系。研究发现，在相同排水量下，添加鳗鱼泥的三体船模型比未添加鳗鱼泥的三体船模型具有更高的减阻性能。结果表明，在Fr为0.35时，阻力降低约11%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Naval Architecture and Marine Engineering ENGINEERING, MARINE-

CiteScore

2.50

自引率

5.60%

发文量

审稿时长

20 weeks

期刊介绍： TJPRC: Journal of Naval Architecture and Marine Engineering (JNAME) is a peer reviewed journal and it provides a forum for engineers and scientists from a wide range of disciplines to present and discuss various phenomena in the utilization and preservation of ocean environment. Without being limited by the traditional categorization, it is encouraged to present advanced technology development and scientific research, as long as they are aimed for more and better human engagement with ocean environment. Topics include, but not limited to: marine hydrodynamics; structural mechanics; marine propulsion system; design methodology & practice; production technology; system dynamics & control; marine equipment technology; materials science; under-water acoustics; satellite observations; and information technology related to ship and marine systems; ocean energy systems; marine environmental engineering; maritime safety engineering; polar & arctic engineering; coastal & port engineering; aqua-cultural engineering; sub-sea engineering; and specialized water-craft engineering. International Journal of Naval Architecture and Ocean Engineering is published quarterly by the Society of Naval Architects of Korea. In addition to original, full-length, refereed papers, review articles by leading authorities and articulated technical discussions of highly technical interest are also published.