The effect of duct on the inflow velocity at the propeller plane

机译：管道对螺旋桨平面流入速度的影响

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To examine the underwater acoustic response of a propeller mounted at the aft of a ship or a submarine, the characteristics of the upstream inflow must be accurately represented. This investigation examined the effect of a duct on the velocity field at the propeller plane. The Computational Fluid Dynamics method is applied to acquire the non-uniform velocity field at the propeller plane of submarines with or without a duct, and the characteristics of the inflow harmonics, the turbulence intensity and the turbulence length scale are then analyzed carefully.

机译：为了检查安装在船舶或潜艇后的螺旋桨的水下声响响应，必须准确地表示上游流入的特性。该研究检测了管道对螺旋桨平面速度场的影响。施加计算流体动力学方法以获取潜艇的螺旋桨平面的非均匀速度场，并且仔细地分析了流入谐波，湍流强度和湍流长度尺度的特性。

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《International Forum on Electrical Engineering and Automation》|2020年|231-234|共4页
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Jianbo. Xie; Chunfang. Wu; Yuanshuang. Zhang; Xianling. Zhu;
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Propellers; Computational modeling; Ducts; Harmonic analysis; Numerical models; Underwater acoustics; Underwater vehicles;

机译：螺旋桨;计算建模;管道;谐波分析;数值模型;水下声学;水下车辆;

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1. A Comparison of Isolated and Ducted Fixed-Pitch Propellers under Non-Axial Inflow Conditions [J] . Michael Cerny, Christian Breitsamter Aerospace . 2020,第8期

机译：非轴向流入条件下分离和管道固定螺距螺旋桨的比较
2. Propeller Force-Constant Modeling for Multirotor UAVs from Experimental Estimation of Inflow Velocity [J] . Gaurang Gupta, Shaaban Abdallah International journal of aerospace engineering . 2018,第2期

机译：基于进水速度实验估算的多旋翼无人机螺旋桨力常数模型
3. Propeller Force-Constant Modeling for Multirotor UAVs from Experimental Estimation of Inflow Velocity [J] . Gupta Gaurang, Abdallah Shaaban International journal of aerospace engineering . 2018,第PTa1期

机译：基于进水速度实验估算的多旋翼无人机螺旋桨力常数模型
4. Prediction of Performance and Design via Optimization of Ducted Propellers Subject to Non-axisymmetric Inflows [C] . Spyros A. Kinnas, Hanseong Lee, Hua Gu, Society of Naval Architects and Marine Engineers Annual Meeting . 2006

机译：通过对非轴对称流入的导管螺旋桨优化的性能和设计预测
5. Vortical inflow - propeller interaction using an unsteady three-dimensional Euler solver. [D] . Choi, Jin Keun. 2000

机译：涡流-使用不稳定的三维欧拉求解器的螺旋桨相互作用。
6. High-temporal velocity-encoded MRI for the assessment of left ventricular inflow propagation velocity: head-to-head comparison with Color M-mode echocardiography [O] . Emmeline Calkoen, Nina Ajmone Marsan, Jeroen J Bax, 2015

机译：高速时速编码MRI评估左心室流入传播速度：彩色M型超声心动图的头对头比较
7. A Comparison of Isolated and Ducted Fixed-Pitch Propellers under Non-Axial Inflow Conditions [O] . Michael Cerny, Christian Breitsamter 2020

机译：非轴向流入条件下分离和管道固定螺距螺旋桨的比较
8. Effective Inflow Velocities into a Propeller Operating in an Axisymmetric Shear Flow [R] . Goodman, T. R., Valentine, D. T. 1980

机译：在轴对称剪切流中运行的螺旋桨的有效流入速度

The effect of duct on the inflow velocity at the propeller plane

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