Numerical prediction research of propeller bearing force for a four-screw ship

被引：0
|
作者：
Li X. [1 ]
Ren N.-X. [1 ]
Sun S. [2 ]
机构：
[1] College of Civil Engineering and Architecture, Hainan University, Haikou
[2] College of Shipbuilding Engineering, Harbin Engineering University, Harbin
来源：
Chuan Bo Li Xue/Journal of Ship Mechanics | 2023年 / 27卷 / 07期
关键词：
bearing force; four-screw ship; harmony analysis; wake field;
D O I：
10.3969/j.issn.1007-7294.2023.07.007
中图分类号：
学科分类号：
摘要：
Based on RANS method and VOF model, a numerical prediction model for resistance and self-propelled performance of a bare ship with four propellers was established, and the integrated numerical simulation of the ship and propellers was carried out. The differences in the mean values and pulsation values of the inner and outer propeller loads were compared and analyzed, and combined with the wake field harmonic analysis, the reasons for the difference in the bearing forces of the inner and outer propellers were discussed. The results show that in terms of the average load, the axial load of the inner propellers was greater than the axial load of the outer propellers, as far as the load fluctuation value is concerned, the axial load fluctuation values of the outer propellers are greater than those of the inner propellers, which is caused by the difference in the harmonic components of each order of the wake field on the propeller disk. In direct sailing conditions, the mutual influence between the inner and outer propellers is relatively small. In comparison, the work of the outer propellers has a greater influence on the performance of the inner propellers. © 2023 China Ship Scientific Research Center. All rights reserved.
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页码：1028 / 1038
页数：10
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