Investigation of An Inverted Bow on Frigate Hull Resistance

IF 1.1 4区工程技术 Q4 MECHANICS Journal of Applied Fluid Mechanics Pub Date : 2024-01-01 DOI:10.47176/jafm.17.1.2122

S. Samuel, A. Wicaksono, W. A. Kurniawan, E. S. Hadi, T. Tuswan, A. Trimulyono, M. Muryadin

引用次数: 0

Abstract

This study discusses the inverted bow design on the combatant hull form. Changes in the shape of the stem angle and flare bow are used as analytical parameters to investigate the ship's performance. Ship resistance and motion will be predicted using the Computational Fluid Dynamics (CFD) approach using the Reynolds Averaged Navier Stokes (RANS) equation and the k-ε turbulence model. The volume of fluid (VOF) method is applied to simulate the change in the free surface between water and air using an overset mesh technique. The ship's movement is limited to sinkage and trim motions, so the movement's accuracy can be predicted. The results revealed that the inverted bow reduced the total resistance by 6.30%, whereas the trim and sinkage showed no significant changes. The breakdown of the reduction ratio showed that friction resistance components were reduced by 10.62%, wave resistance by 44.05%, and viscous-pressure resistance by 45.33%. This highlights the effectiveness of an inverted bow in optimizing wave and viscous pressure, enhancing overall ship performance.

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

倒艏对护卫舰船体阻力的影响研究

本研究讨论了战斗舰船体的倒艏设计。艏柄角和外撇艏形状的变化被用作分析参数来研究舰艇的性能。将使用计算流体动力学（CFD）方法，利用雷诺平均纳维-斯托克斯（RANS）方程和 k-ε 湍流模型来预测船舶阻力和运动。采用流体体积 (VOF) 方法，利用超集网格技术模拟水和空气之间自由表面的变化。船舶的运动仅限于下沉和修整运动，因此可以预测其运动精度。结果显示，倒置船首使总阻力减少了 6.30%，而修整和下沉没有明显变化。从减少比例的细分来看，摩擦阻力减少了 10.62%，波浪阻力减少了 44.05%，粘压阻力减少了 45.33%。这凸显了倒艏在优化波浪和粘性压力方面的有效性，从而提高了船舶的整体性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文去求助

来源期刊

Journal of Applied Fluid Mechanics THERMODYNAMICS-MECHANICS

CiteScore

2.00

自引率

20.00%

发文量

138

审稿时长

>12 weeks

期刊介绍： The Journal of Applied Fluid Mechanics (JAFM) is an international, peer-reviewed journal which covers a wide range of theoretical, numerical and experimental aspects in fluid mechanics. The emphasis is on the applications in different engineering fields rather than on pure mathematical or physical aspects in fluid mechanics. Although many high quality journals pertaining to different aspects of fluid mechanics presently exist, research in the field is rapidly escalating. The motivation for this new fluid mechanics journal is driven by the following points: (1) there is a need to have an e-journal accessible to all fluid mechanics researchers, (2) scientists from third- world countries need a venue that does not incur publication costs, (3) quality papers deserve rapid and fast publication through an efficient peer review process, and (4) an outlet is needed for rapid dissemination of fluid mechanics conferences held in Asian countries. Pertaining to this latter point, there presently exist some excellent conferences devoted to the promotion of fluid mechanics in the region such as the Asian Congress of Fluid Mechanics which began in 1980 and nominally takes place in one of the Asian countries every two years. We hope that the proposed journal provides and additional impetus for promoting applied fluids research and associated activities in this continent. The journal is under the umbrella of the Physics Society of Iran with the collaboration of Isfahan University of Technology (IUT) .