Numerical Analysis on Self-Propulsion of a Waterjet-Propelled Ship with Different Propulsion Models

被引:6
作者
Zhang, Yong [1 ]
Li, Zhong [1 ]
Yang, Aiming [1 ]
机构
[1] Fudan Univ, Dept Aeronaut & Astronaut, Shanghai 200433, Peoples R China
来源
APPLIED SCIENCES-BASEL | 2022年 / 12卷 / 14期
关键词
waterjet; self-propulsion; multiple reference frame model; sliding mesh model; body-force model; BODY-FORCE; DYNAMICS; THRUST; VOLUME;
D O I
10.3390/app12147148
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The hydrodynamics of the waterjet-propelled ship is a challenging issue due to the sophistication of waterjet system geometry as well as waterjet-hull interaction. In current study, three different propulsion models, namely, multiple reference frame (MRF) model, sliding mesh model and body-force model, are utilized to simulate the self-propulsion of a waterjet-propelled ship model. A body-force model based on a User-Defined Function (UDF) on the ANSYS Fluent platform is proposed. The computational cost, wave pattern, jet stream surface, and self-propelled hull resistance of the MRF model and body-force model are compared. Comprehensive comparisons of the internal ingested flow field of the control volume are made, especially at the capture area and nozzle section, with the two different models. In addition, the resistance increment fraction and jet system thrust deduction fraction with the two different models are investigated. Lastly, the flow field with the steady MRF model, the body-force model (RANS) and the transient sliding mesh model (URANS) are compared.
引用
收藏
页数:20
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