Prediction of steady hydrodynamic performance of pump jet propulsion based on free wake vortex model

被引:3
|
作者
Weng, Kaiqiang [1 ]
Shao, Fei [1 ]
Li, Jiandong [1 ]
Sun, Shuai [2 ]
Wang, Chao [3 ]
机构
[1] Army Engn Univ PLA, Coll Field Engn, Nanjing 210007, Peoples R China
[2] Nanjing Univ Sci & Technol, Natl Key Lab Transient Phys, Nanjing 210094, Peoples R China
[3] Harbin Engn Univ, Coll Shipbuilding Engn, Harbin 150001, Peoples R China
基金
中国国家自然科学基金;
关键词
SHEET ROLL-UP; PANEL METHOD; PROPELLER;
D O I
10.1063/5.0214540
中图分类号
O3 [力学];
学科分类号
08 ; 0801 ;
摘要
Due to mutual interference between various components, the transitional motion of fluid particles in the flow field of pump jet propulsion becomes more complex and variable. Additionally, the vortex structure at the wake can undergo severe contraction and deformation. To further improve the accuracy of predicting the hydrodynamic performance of pump jet propulsion, this paper proposes a time-varying, space-varying, and induced velocity-varying free wake numerical calculation model based on potential flow theory. A set of hydrodynamic performance prediction methods that consider the interference of the free wake model is also established. Furthermore, a velocity smoothing model based on time reversal is constructed based on the distribution pattern of numerical singularity points during the induced velocity calculation process, which enhances the robustness of the calculation program. By comparing and analyzing the numerical calculation results with experimental results, including pressure, circulation distribution, and hydrodynamic performance, the accuracy of the free wake model proposed in this paper is verified. The results also demonstrate that the free wake model proposed in this paper can effectively improve the prediction accuracy of the hydrodynamic performance of the pump jet propulsion.
引用
收藏
页数:19
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