High-Speed Trimaran Drag: Numerical Analysis and Model Tests
High-Speed Trimaran Drag: Numerical Analysis and Model Tests
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DOI：
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发表时间：
2004-09
影响因子：
1.4
通讯作者：
I. Mizine;E. Amromin;L. Crook;W. Day;R. Korpus
中科院分区：
文献类型：
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作者：
I. Mizine;E. Amromin;L. Crook;W. Day;R. Korpus
发展了一种高速三体船阻力计算的数值方法。该技术基于修正的粘性-无粘性相互作用概念和波阻的准线性理论（Amromin等，1984）。这种技术的关键元素，这是所谓的修正准线性理论（MQLT），是一个帐户弗劳德数对船舶纵倾，方尾阻力，和湿表面的影响。这种影响导致阻力分量的外观，显着依赖于雷诺数和弗劳德数。在模型试验数据中，该分量传统上被包括在剩余阻力中。所给出的初步数值结果是通过对边界层理论进行简化而得到的，这些简化对于细长船体是可以接受的。计算阻力与模型试验结果基本一致。在模型和船舶尺度雷诺数下，还将边界层的MQLT计算与雷诺平均Navier-Stokes（RANS）计算（Spalart和Allmaras 1992年的单方程湍流模型）进行了比较。对具有方尾的高速细长体和三体船不同相互位置的模型-船模相关系数进行了分析。
A numerical technique for high-speed trimaran resistance calculation is developed. The technique is based on the modified viscous-inviscid interaction concept and quasi-linear theory of wave resistance (Amromin et al 1984). The key element of this technique, which is called modified quasi-linear theory (MQLT), is an account of Froude number influence on the ship trim, transom drag, and wetted surface. This influence leads to appearance of a drag component that significantly depends on both Reynolds number and Froude number. This component has been traditionally included in residuary drag in the model test data. The presented preliminary numerical results were obtained with simplifications of the boundary layer theory that are acceptable for slender hulls. Calculated drag is in sufficient accordance with results of model tests. The MQLT computations of boundary layers are also compared with the Reynolds averaged Navier-Stokes (RANS) calculations (one-equation turbulence model by Spalart and Allmaras 1992) at model and ship scale Reynolds numbers. An analysis of the model-ship scale correlation factor for high-speed slender hulls with transom sterns and diverse mutual position of the trimaran hulls is done.