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首页> 外文期刊>Journal of Marine Science and Engineering >Prediction of Propeller-Induced Hull Pressure Fluctuations via a Potential-Based Method: Study of the Effects of Different Wake Alignment Methods and of the Rudder
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Prediction of Propeller-Induced Hull Pressure Fluctuations via a Potential-Based Method: Study of the Effects of Different Wake Alignment Methods and of the Rudder

机译：通过基于势的方法预测螺旋桨引起的船体压力波动：不同尾迹对准方法和舵的影响研究

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In order to predict ship hull pressure fluctuations induced by marine propellers, a combination of several numerical schemes is used. The propeller perturbation flow is solved by the boundary element method (BEM), while the coupling between a BEM solver and a Reynolds-averaged Navier-Stokes (RANS) solver can efficiently predict the effective wake. Based on the BEM solution under the predicted effective wake, the propeller-induced potential on the ship hull can be evaluated. Then, a pressure-BEM solver is used to solve the diffraction pressure on the hull in order to obtain the solid boundary factor which leads to the total hull pressure. This paper briefly introduces the schemes and numerical models. To avoid numerical instability, several simplifications need to be made. The effects of these simplifications are studied, including the rudder effect and the wake alignment model effect.
机译：为了预测由船用螺旋桨引起的船体压力波动，使用了几种数值方案的组合。螺旋桨摄动流通过边界元法（BEM）求解，而BEM求解器与雷诺平均Navier-Stokes（RANS）求解器之间的耦合可以有效地预测有效尾流。基于在预测的有效尾流下的BEM解决方案，可以评估螺旋桨在船体上引起的电势。然后，使用压力-BEM求解器求解船体上的衍射压力，以获得导致总船体压力的固体边界因子。本文简要介绍了方案和数值模型。为了避免数值不稳定性，需要进行一些简化。研究了这些简化的效果，包括方向舵效果和尾流对准模型效果。

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