An alternative to experiments is the use of numerical model tests, where the performances of ships can be evaluated entirely by computer simulations. In this paper, the free surface viscous flow around a bare hull model is simulated with three Computational Fluid Dynamics (CFD) software packages (FINE Marine, ANSYS CFD and SHIPFLOW) and compared to the results obtained during the experimental tests. The bare hull model studied is the Duisburg Test Case (DTC), developed at the Institute of Ship Technology, Ocean Engineering and Transport Systems (ISMT) for benchmarking and validation of the numerical methods. Hull geometry and model test results of resistance, conducted in the experimental facility at SVA Postdam, Nietzschmann, in 2010, are publicly available. A comparative analysis of the numerical approach and experimental results is performed, related to the numerical simulation of the free surface viscous flow around a typical container ship. Further, a comparative analysis between the results provided by NUMECA, ANSYS and SHIPFLOW is performed. Regarding the solution obtained, a satisfactory agreement between the towing test results and the computation results can be noticed. The minimum mean error was obtained through the SHIPFLOW case, 2.011%, which proved the best solution for the case studied.

中文翻译：

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基准集装箱船模型试验与三种CFD研究的比较

实验的一种替代方法是使用数值模型测试，其中可以通过计算机模拟完全评估船舶的性能。在本文中，使用三个计算流体动力学（CFD）软件包（FINE Marine，ANSYS CFD和SHIPFLOW）模拟了裸船模型周围的自由表面粘性流，并将其与实验测试中获得的结果进行了比较。研究的裸机壳模型是杜伊斯堡测试案例（DTC），该案例是由船舶技术，海洋工程和运输系统学院（ISMT）开发的，用于对数值方法进行基准测试和验证。于2010年在尼采曼SVA Postdam的实验设施中进行的船体几何形状和阻力模型测试结果已公开。对数值方法和实验结果进行了比较分析，与围绕典型集装箱船的自由表面粘性流的数值模拟有关。此外，对NUMECA，ANSYS和SHIPFLOW提供的结果进行了比较分析。关于所获得的解决方案，可以注意到拖曳测试结果与计算结果之间令人满意的一致性。通过SHIPFLOW案例获得的最小平均误差为2.011％，这证明了所研究案例的最佳解决方案。