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Numerical evaluation of hydrodynamic characteristics of planing hulls by using a hybrid method
Proceedings of the Institution of Mechanical Engineers, Part M: Journal of Engineering for the Maritime Environment ( IF 1.5 ) Pub Date : 2021-02-12 , DOI: 10.1177/1475090221990243
Emre Kahramanoglu 1 , Silvia Pennino 2 , Huseyin Yilmaz 1
Affiliation  

The hydrodynamic characteristics of the planing hulls in particular at the planing regime are completely different from the conventional hull forms and the determination of these characteristics is more complicated. In the present study, calm water hydrodynamic characteristics of planing hulls are investigated using a hybrid method. The hybrid method combines the dynamic trim and sinkage from the Zarnick approach with the Savitsky method in order to calculate the total resistance of the planing hull. Since the obtained dynamic trim and sinkage values by using the original Zarnick approach are not in good agreement with experimental data, an improvement is applied to the hybrid method using a reduction function proposed by Garme. The numerical results obtained by the hybrid and improved hybrid method are compared with each other and available experimental data. The results indicate that the improved hybrid method gives better results compared to the hybrid method, especially for the dynamic trim and resistance. Although the results have some discrepancies with experimental data in terms of resistance, trim and sinkage, the improved hybrid method becomes appealing particularly for the preliminary design stage of the planing hulls.



中文翻译:

混合法数值模拟滑行船体水动力特性

特别是在滑行状态下,滑行船的流体动力学特性与常规船型完全不同,并且这些特性的确定更加复杂。在本研究中,使用混合方法研究了滑行船体的平静水动力特性。混合方法将Zarnick方法的动态修整和沉降与Savitsky方法结合在一起,以便计算滑行船体的总阻力。由于使用原始Zarnick方法获得的动态修剪和沉降值与实验数据不太吻合,因此对使用Garme提出的归约函数的混合方法进行了改进。将通过混合和改进的混合方法获得的数值结果相互比较,并获得可用的实验数据。结果表明,与混合法相比,改进的混合法具有更好的效果,尤其是在动态修整和阻力方面。尽管结果在阻力,修整和下沉方面与实验数据存在一些差异,但改进的混合动力方法尤其对滑行船体的初步设计阶段具有吸引力。

更新日期:2021-02-15
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