运河宽度和深度对750DWT Perintis船阻力影响的CFD模拟

IF 3.9 4区 工程技术 Q1 ENGINEERING, MARINE Brodogradnja Pub Date : 2023-01-01 DOI:10.21278/brod74107
E. S. Hadi, T. Tuswan, G. Azizah, Baharuddin Ali, Samuel Samuel, M. L. Hakim, Muhammad Raaflie Caesar Putra Hadi, M. Iqbal, Dian Purnama Sari, D. Satrio
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引用次数: 3

摘要

研究船舶进入浅水时与海底的水动力相互作用被认为是内河运输中最重要的考虑因素之一。对船舶在受限水域的行为进行了许多研究,例如船舶在不同形式的运河截面上行驶。本研究旨在评估750 DWT Perintis船通过不同运河类型的水动力相互作用,以确定限制宽度和深度横截面对船舶阻力的相对影响。研究了两种不同断面的运河,包括运河岸和矩形运河,探讨了运河宽度(Wb)、深度比(hw/T)和堵塞比函数(As/Ac)的影响。采用计算流体力学(CFD)方法,结合reynolds -average Navier-Stokes (RANS)求解器和湍流模型𝑘−p3来预测船舶的总阻力。通过拖曳槽试验初步验证了所提出的数值模拟,误差范围为0.11-7.74%。结果表明,矩形岸和运河岸均存在类似的现象。管径较浅(低hw/T)和较窄(低Bc/Bs)的情况下电阻值较高。在更受限制的水中,船体周围自由水面的回流和下沉变得明显,改变了船舶的水动力特性,增加了阻力。可以发现,堵塞比(mb)越高,两种运河类型的总阻力值越高,这证明航速越高的船舶对航道限制的变化越敏感。
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Influence of the canal width and depth on the resistance of 750 DWT Perintis ship using CFD simulation
Investigation of hydrodynamic interaction between the vessel and the seabed when entering shallow water is considered one of the most critical considerations of inland waterway transport. There are many investigations into the behavior of ships in restricted waters, such as ships traveling in different forms of canal cross-sections. The present study aims to evaluate the hydrodynamic interaction of the 750 DWT Perintis Ship moving through the different canal types to determine the relative effects of limiting the width and depth cross section on the ship's resistance. Two different canals with different cross sections, including canal bank and rectangular canal, were evaluated to investigate the influence of canal width (Wb), depth ratio (hw/T), and blockage ratio function (As/Ac). The Computational Fluid Dynamic (CFD) method with Reynolds-averaged Navier–Stokes (RANS) solver and turbulent model 𝑘−𝜀 were used to predict the total resistance of the ship. The proposed numerical simulation was initially validated with an experimental towing tank test in the error range of 0.11-7.74%. The results indicated similar phenomena were found both in rectangular and canal banks. The case with a shallower (lower hw/T) and a narrower (lower Bc/Bs) canal dimension has a higher resistance value. Backflow and subsidence of free surface became significant around the ship's hull in more restricted water, changing the ship's hydrodynamic characteristics and increasing resistance. It can be found that the higher the blockage ratio (mb), the higher the total resistance value in both canal types, which proved that ships with higher speeds were more sensitive to changes in waterway restrictions.
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来源期刊
Brodogradnja
Brodogradnja ENGINEERING, MARINE-
CiteScore
4.30
自引率
38.90%
发文量
33
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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