Numerical simulation of coupling effect between wake of propeller and free wheel

被引：0
|
作者：
Hu J. [1 ]
Zhang W. [1 ]
机构：
[1] College of Shipbuilding Engineering, Harbin Engineering University, Harbin
来源：
Huazhong Keji Daxue Xuebao (Ziran Kexue Ban)/Journal of Huazhong University of Science and Technology (Natural Science Edition) | 2019年 / 47卷 / 10期
关键词：
Free wheel; Pressure fluctuation; Stress; Wake of free wheel; Wake of propeller;
D O I：
10.13245/j.hust.191015
中图分类号：
学科分类号：
摘要：
In order to investigate the coupling effect between the wake of propeller and free wheel, the flow field of propeller and free wheel was studied by using the method of SST (shear stress transport). The flow field was meshed using the Trimer grids, and the sliding mesh method was used to realize the movement of the propeller and the free wheel. The cutting action of the free wheel on the propeller wake vortex was analyzed. The pressure fluctuation on the blade of free wheel was discussed, and the stress distribution on the free wheel was studied. The numerical simulation results show that the pressure on the surface of the free wheel has an obvious periodicity, which is consistent with the periodicity of the propeller thrust pulsation. At the leading edge, the amplitude of the pulsating pressure on the back of blade is larger than that on the face. However, at other area of the blade, the amplitude of the pulsating pressure on the face is larger than that on the back. The amplitude of the pulsating pressure on the leaf back is reduced from the leading edge to the trailing edge. Without considering gravity, the stress distribution on the free wheel is consistent with the pressure distribution. However, in the case of considering gravity, the stress distribution changes and the stress value increases. © 2019, Editorial Board of Journal of Huazhong University of Science and Technology. All right reserved.
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页码：82 / 86and104
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