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Total resistance prediction of an intact and damaged tanker with flooded tanks in calm water

机译：完整和损坏的油轮在平静水中充满油箱的总阻力预测

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摘要

This paper presents the prediction of the total resistance of an intact and damaged ship model using the computational fluid dynamics (CFD) technique. The study is performed on the model of a tanker with a large hole in the bottom of the hull. The damage is based on statistical data on ship grounding accidents and the chosen hole size and location in the midship area represents its plausible size and location due to grounding. Reynolds-Averaged Navier-Stokes (RANS) equations with the volume of fluid (VOF) surface capturing technique are employed to solve the flow around the steadily advancing model of a damaged ship in calm water. The experiments, both on an intact and a damaged ship model that were carried out in the towing tank of the Brodarski Institute in Zagreb, Croatia, are used to evaluate the results. The numerical results are in a good agreement with the experimentally obtained results. The significant average increase of 27% in total resistance due to the altered flow around the hole and inside the flooded tanks can be observed for the analysed case. The study shows that the proposed CFD model and settings provide a good prediction of the total resistance together with the flow both around the damaged hull and inside the flooded tanks of the damaged tanker.
机译：本文介绍了使用计算流体力学（CFD）技术对完整受损船模的总阻力的预测。该研究是基于在船体底部带有大孔的油轮模型进行的。损坏是基于船舶着陆事故的统计数据得出的，所选中孔区域的孔的大小和位置代表了由于着陆而引起的合理大小和位置。采用雷诺平均Navier-Stokes（RANS）方程和流体体积（VOF）表面捕获技术来求解在平静水中稳定航行的受损船舶模型周围的流动。在克罗地亚萨格勒布的Brodarski研究所的拖船上对完好无损的船舶模型进行的实验均用于评估结果。数值结果与实验结果吻合良好。在分析的情况下，可以观察到由于孔周围和溢流油箱内部流量的变化，总阻力显着平均增加了27％。研究表明，提出的CFD模型和设置可以很好地预测总阻力，以及受损船体周围和受损油轮被淹没的油箱内部的流量。

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