船舶 ›› 2023, Vol. 34 ›› Issue (06): 73-84.DOI: 10.19423/j.cnki.31-1561/u.2023.06.073

• • 上一篇    下一篇

导管对泵喷推进器艇后推进特性的影响

李晗1, 黄桥高1,2,*, 潘光1,2, 李福正1, 何幸1   

  1. 1.西北工业大学 航海学院 西安 710072;
    2.西北工业大学 无人水下运载技术工信部重点实验室 西安 710129
  • 收稿日期:2023-10-10 修回日期:2023-11-14 出版日期:2023-12-25 发布日期:2023-12-28
  • 通讯作者: 黄桥高(1983-),男,博士,教授/博士生导师。研究方向:水下航行器总体设计。
  • 作者简介:李 晗(1993-),男,博士。研究方向:水下航行器总体设计。潘 光(1969-),男,博士,教授/博士生导师。研究方向:水下航行器总体设计。李福正(1992-),男,博士研究生。研究方向:推进器水动力学。何 幸(1995-),女,博士研究生。研究方向:流体力学。
  • 基金资助:
    国家自然科学基金资助项目(51979226)

Influence of Duct on the Behind-Hull Propulsion Characteristics of Pump-Jet Propulsors

LI Han1, HUANG Qiaogao1,2,*, PAN Guang1,2, LI Fuzheng1, HE Xing1   

  1. 1. School of Marine Science and Technology, Northwestern Polytechnical University, Xi’an 710072, China;
    2. Key Laboratory of Unmanned Underwater Vehicle, Northwestern Polytechnical University, Xi’an 710129, China
  • Received:2023-10-10 Revised:2023-11-14 Online:2023-12-25 Published:2023-12-28

摘要: 为研究泵喷推进器的艇后推进特性及导管主要参数对推进特性的影响,给出基于推进效率和推进器功率的导管主要参数选择范围,该文通过改进的延迟脱体涡模拟(improved delayed detached eddy simulation, IDDES)方法求解艇后泵喷推进器在不同航速、转速和导管主要参数下的流场,研究了不同航速和不同导管主要参数下的泵喷推进性能和自航因子,其中导管主要参数包括倾角、轴向长度、最大厚度、进口直径和出口直径。结果显示:除导管最大厚度外,导管的倾角、轴向长度、进出口直径对自航因子及推进器功率有较明显影响,倾角和出口直径的变化会显著改变推进器流量,进而影响功率和推进效率。结论表明:选择艇用泵喷推进器导管主要参数时,除了取值要在合理范围,倾角和出口直径还要根据艇体尾段的线型和角度来优化取最佳值。

关键词: 泵喷推进器, 数值模拟, 水动力, 自航因子

Abstract: This article focuses on the propulsion characteristics of the pump-jet propulsor (PJP) behind the hull and the influence of the main dimensions of the duct. The flow fields of the PJP behind the hull under different ship speeds, rotational velocities and main dimensions of the duct are solved by the Improved Delayed Detached Eddy Simulation (IDDES) method to provide the selection ranges of the main dimensions of the duct based on the propulsion efficiency and the propulsor power. It investigates the propulsion performance of the PJP and the self-propulsion factors under different ship speeds and main dimensions of the duct including the inclination angle, axial length, maximum thickness, inlet diameter, and outlet diameter. The results show that except for the duct maximum thickness, the inclination angle, axial length, inlet diameter, and outlet diameter of the duct have significant impacts on the self-propulsion factors and the power. The variation of the inclination angle and the outlet diameter significantly change the flow rate of the propulsor, thereby affecting the propulsion efficiency and the power. It indicates that when determining the main parameters of the duct of the PJP for a submarine, except for proper selection of the values within reasonable ranges, the inclination angle and outlet diameter should also be optimized based on the shape and angle of the hull stern.

Key words: pump-jet propulsor, numerical simulation, hydrodynamics, self-propulsion factor

中图分类号: