基于STAR-CCM+的小水线面三体船阻力数值仿真

张明霞; 韩兵兵; 卢鹏程; 赵正彬

doi:10.19693/j.issn.1673-3185.01128

基于STAR-CCM+的小水线面三体船阻力数值仿真

Numerical simulation for resistance of trimaran small waterplane area center hull based on STAR-CCM+

摘要

摘要:
目的小水线面三体船因具有良好的耐波性、快速性及稳定性而在民用和军用领域受到青睐，但不同的水下潜体形状及不同侧体位置在不同航速时的阻力变化规律还有待研究。由于开展船模试验所需时间较长、成本较高，难以将全部可能的方案都进行试验，因此利用STAR-CCM+平台对小水线面三体船周围的粘性流场进行数值模拟。
方法考虑到自由表面效应的影响，首先验证采用STAR-CCM+平台进行阻力数值计算的可行性和可靠性；其次，研究系列傅汝德数下不同侧体位置时，潜体横剖面为圆形的小水线面三体船阻力的变化规律。
结果结果表明，随着航速的增加，侧体布置于主体后部并向主体靠拢时，小水线面三体船的总阻力较小；在Fr=0.338~0.494范围内，小水线面三体船的总阻力较细长型三体船总阻力的降低最为显著。
结论研究结果可为同类型船舶的设计提供一定的借鉴和参考作用。

Abstract:
Objectives Due to its excellent seakeeping, rapidity and stability, Trimaran Small Waterplane Area Center Hull(TriSWACH)has an increasing number of applications in both civil vessels and warships. However, the laws of resistance of different submerged body shapes and side-hull configurations at different speeds still require research. As model tests are time-consuming and expensive, and cannot cover all potential hulls, numerical calculation based on STAR-CCM + is becoming increasingly preferred.
Methods With the free surface effect consideration, STAR-CCM+ is validated to be practical for TriSWACH resistance prediction. The resistance performance is calculated with different side-hull configurations, including longitudinal and transverse, of circular submerged body shapes under the Fr series.
Results As the results indicate, with the increase of speed, when the side-hull is arranged behind and moves closer to the main hull, the total resistance of TriSWACH is significantly lower than that of traditional trimarans, in the range of Fr=0.338~0.494.
Conclusions The findings in this paper can provide useful references for future TriSWACH design.

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