NUMERICAL AND EXPERIMENTAL ASSESSMENT OF THE TOTAL RESISTANCE OF A YACHT

IF 3.9 4区工程技术 Q1 ENGINEERING, MARINE

Brodogradnja Pub Date : 2021-07-01 DOI:10.21278/brod72305

N. Degiuli, A. Farkas, I. Martić, Ivan Zeman, V. Ruggiero, Vedran Vasiljević

引用次数: 13

Abstract

One of the main goals of the ship design process is the reduction of the total resistance, which is nowadays even more highlighted due to increasingly stringent rules related to ship energy efficiency. In this paper, the investigation of the impact of the bow on the total resistance of a yacht is carried out for three models by towing tank tests and numerical simulations. The verification and validation studies are performed, and satisfactory agreement is achieved. Also, a comparison of three turbulence models for the prediction of the total resistance of a yacht is made. The flow around the models of the yacht is analysed and it is demonstrated that bulbous bow causes the reduction of wave elevations. Experimental and numerical results indicate that the decrease in the total resistance due to bulbous bow can be up to 7%. Finally, the applicability of CFD within the ship design process is presented.

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游艇总阻力的数值和实验评估

船舶设计过程的主要目标之一是降低总阻力，由于与船舶能效相关的规则越来越严格，总阻力如今更加突出。本文通过拖曳水槽试验和数值模拟，对三种模型的船头对游艇总阻力的影响进行了研究。进行了验证和验证研究，并达成了令人满意的一致意见。此外，还对三种湍流模型进行了比较，以预测游艇的总阻力。对游艇模型周围的流动进行了分析，结果表明，球首导致波浪高度降低。实验和数值结果表明，球根状船首的总阻力可降低7%。最后，介绍了CFD在船舶设计过程中的适用性。

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

Brodogradnja ENGINEERING, MARINE-

CiteScore

4.30

自引率

38.90%

发文量

审稿时长

>12 weeks

期刊介绍： The journal is devoted to multidisciplinary researches in the fields of theoretical and experimental naval architecture and oceanology as well as to challenging problems in shipbuilding as well shipping, offshore and related shipbuilding industries worldwide. The aim of the journal is to integrate technical interests in shipbuilding, ocean engineering, sea and ocean shipping, inland navigation and intermodal transportation as well as environmental issues, overall safety, objects for wind, marine and hydrokinetic renewable energy production and sustainable transportation development at seas, oceans and inland waterways in relations to shipbuilding and naval architecture. The journal focuses on hydrodynamics, structures, reliability, materials, construction, design, optimization, production engineering, building and organization of building, project management, repair and maintenance planning, information systems in shipyards, quality assurance as well as outfitting, powering, autonomous marine vehicles, power plants and equipment onboard. Brodogradnja publishes original scientific papers, review papers, preliminary communications and important professional papers relevant in engineering and technology.

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