Estimation of full-scale propeller torque and thrust using free-running model ship in waves
Estimation of full-scale propeller torque and thrust using free-running model ship in waves
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DOI：
10.1016/j.oceaneng.2016.05.005
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发表时间：
2016-07
影响因子：
5
通讯作者：
M. Ueno;Y. Tsukada
中科院分区：
文献类型：
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作者：
M. Ueno;Y. Tsukada
本文提出了一种通过自由航行船模试验估算全尺寸螺旋桨扭矩和推力的方法。管道风扇辅助推进器（DFAT）（Tsukada等人，2014年，Tsukada等人，2013）和方向舵有效性和速度修正（RSC）（Ueno和Tsukada，2015; Suzuki等人，2014年，Suzuki等人，2015）确保模型船在风浪中的运动与全尺寸相似，其中RSC根据瞬时模型船速度控制模型船螺旋桨转速和辅助推力。该方法通过分析螺旋桨有效来流速度中的波浪分量，估算波浪中螺旋桨的全尺寸脉动扭矩和推力。该方法的试验应用，与船模试验结果比较，验证了全尺寸脉动螺旋桨扭矩和推力的特性，也使任意模拟螺旋桨扭矩和发动机扭矩相互作用的发动机模型都能用于自由航行船模试验。
The authors propose a method to estimate full-scale propeller torque and thrust consisting of low-frequency and high-frequency components in waves by free-running model ship test. The duct fan auxiliary thruster (DFAT) (Tsukada et al., 2014, Tsukada et al., 2013) and the rudder-effectiveness and speed correction (RSC) (Ueno and Tsukada, 2015; Suzuki et al., 2014, Suzuki et al., 2015) ensure similar model ship motion to full-scale in wind and waves, where RSC controls the model ship propeller rate of revolution and the auxiliary thrust depending on instantaneous model ship speed. Analyzing wave component in the effective inflow velocity to propeller, the method estimates full-scale fluctuating propeller torque and thrust in waves. Trial application of the method exemplifies the property of full-scale fluctuating propeller torque and thrust comparing with those of a model ship.This method also makes it possible to incorporate into free-running model ship tests any engine model simulating interaction between propeller torque and engine torque.