The effects of fins on the intermediate wake of a submarine model
The effects of fins on the intermediate wake of a submarine model
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DOI：
10.1115/1.4001010
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发表时间：
2010-03
影响因子：
2
通讯作者：
J. Jiménez;R. Reynolds;A. Smits
中科院分区：
文献类型：
--
作者：
J. Jiménez;R. Reynolds;A. Smits
给出了模型长度在0.49×106到1.8×106之间，试验位置在尾部下游直径3到9之间的雷诺数范围内潜艇模型后湍流尾迹行为的结果。该模型的形状模拟了一艘理想化的潜艇，并进行了带和不带尾翼的测试。在没有尾翼的情况下，远离风帆影响的平面上的速度分布迅速变得自相似，并且可以很好地用指数函数来描述。尾翼在尾迹外部区域的速度分布中产生缺陷，同时在与尾翼尖端相对应的位置产生更高的湍流值。在远离中线平面的平面上进行的测量表明，速度分布保持自相似，而剪切应力分布清楚地显示了尾翼底部拖曳的项链旋涡的影响。
Results are presented on the behavior of the turbulent wake behind a submarine model for a range of Reynolds numbers based on the model length between 0.49 × 10 6 and 1.8 × 10 6 , for test locations between 3 and 9 diameters downstream of the stern. The shape of the model emulates an idealized submarine, and tests were performed with and without stern fins. In the absence of fins, the velocity profile in planes away from the influence of the sail rapidly becomes self-similar and is well described by a function of exponentials. The fins create defects in the velocity profiles in the outer region of the wake, while yielding higher values of turbulence at locations corresponding to the tips of the fins. Measurements conducted in planes away from the midline plane show that the velocity profiles remain self-similar while the shear stress profiles clearly show the effects of the necklace vortices trailing from the base of the fins.