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A posteriori error and uncertainty estimation in computational ship hydrodynamics
Ocean Engineering ( IF 5 ) Pub Date : 2020-07-01 , DOI: 10.1016/j.oceaneng.2020.107434
Momchil Terziev , Tahsin Tezdogan , Atilla Incecik

Abstract The increasing relevance of simulation-based design has created a need to accurately estimate and bind numerical errors. This is particularly relevant to full-scale computational ship hydrodynamics, where measurements are difficult and expensive, simultaneously requiring a high degree of predictive accuracy even in early design stages. However, the field of ship hydrodynamics has yet to fully exploit the enhanced capabilities and potential benefits numerical verification methods have to offer. The present study presents a detailed application of numerical verification procedures in CFD as applied to local parameters, such as free surface elevation and skin friction. This is done in order to pinpoint specific locations in the computational domain responsible for heightened levels of error and uncertainty. Relationships between different parameters are demonstrated and discussed based on a set of full-scale simulations of the KCS advancing through a canal using CFD.

中文翻译:

计算船舶流体动力学中的后验误差和不确定性估计

摘要 基于仿真的设计越来越重要,因此需要准确估计和绑定数值误差。这与全尺寸计算船舶流体动力学特别相关,其中测量困难且昂贵,同时即使在早期设计阶段也需要高度的预测精度。然而,船舶流体动力学领域尚未充分利用数值验证方法必须提供的增强功能和潜在优势。本研究详细介绍了 CFD 中数值验证程序的详细应用,该程序应用于局部参数,例如自由表面高程和皮肤摩擦。这样做是为了查明计算域中导致错误和不确定性增加的特定位置。
更新日期:2020-07-01
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