Influence of drift angle on the computation of hull–propeller–rudder interaction
Influence of drift angle on the computation of hull–propeller–rudder interaction
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DOI：
10.1016/j.oceaneng.2015.04.059
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发表时间：
2015-07
影响因子：
5
通讯作者：
C. Badoe;A. Phillips;S. Turnock
中科院分区：
文献类型：
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作者：
C. Badoe;A. Phillips;S. Turnock
螺旋桨的操作主导了对上游船体和下游舵的流干扰效应。进行了调查的灵敏度，这些影响可以解决时，漂移的角度，以及上游机构的长度是不同的。计算结果进行了比较，一个详细的风洞调查，测量螺旋桨推力，扭矩和舵力的变化。上游机身长度和漂移角的变化有效地改变了螺旋桨平面处的横流和尾流的大小。采用雷诺平均Navier-Stokes（RANS）方程和任意网格界面（AMI）模型计算了船体-螺旋桨-方向舵组合体周围的时间分辨流场，以考虑螺旋桨的运动。网格敏感性研究量化了充分解析流场所需的网格单元数。总的来说，当预测推进效率、流场矫正和方向舵操纵性能的变化时，发现实验和计算结果之间有很好的一致性。然而，可以看出，有一个显着的计算费用与时间分辨螺旋桨的相互作用和替代的体力为基础的方法可能仍然需要与自推进船舶操纵的计算。
The operation of the propeller dominates the flow interaction effects on the upstream hull and a downstream rudder. An investigation is carried out into the sensitivity with which these effects can be resolved when an angle of drift is applied as well as the length of an upstream body is varied. The computed results are compared to a detailed wind tunnel investigation which measured changes in propeller thrust, torque and rudder forces. Variation of the upstream body length and drift angle effectively varies the magnitude of the crossflow and wake at the propeller plane. The time resolved flow was computed around the hull–propeller–rudder configuration using the Reynolds-averaged Navier–Stokes (RANS) equations and an Arbitrary Mesh Interface (AMI) model to account for the motion of the propeller. A mesh sensitivity study quantifies the necessary number of mesh cells to adequately resolve the flow field. Overall, good agreement is found between the experimental and computational results when predicting the change in propulsive efficiency, flow straightening and rudder manoeuvring performance. However, it can be seen that there is a significant computational expense associated with a time resolved propeller interaction and that alternative body force based methods are likely to still be required with the computation of self-propelled ship manoeuvres.