Scholarlink

<p>This study parametrically explores the hydrodynamic characteristics of a toroidal propeller. Seven geometrical parameters (skew angle, pitch angle, chord length, rake, roll angle, blade alpha vertical angle, and blade section) are introduced, and their effects on thrust, torque, and efficiency are analyzed. The performance of the propellers is simulated using computational fluid dynamics based on the finite volume method. First, an open-water simulation is conducted for a common B-series propeller. The numerical results are compared with available experimental data, and an acceptable agreement is achieved. Then, the investigations were extended to the toroidal propeller by changing the seven geometrical parameters (±5%, ±10%, and ±20%). The analysis demonstrates hydrodynamic performance improvements relative to the B-series propeller. Numerical results indicate that changes in pitch angles exert the greatest influence on hydrodynamic efficiency, whereas variations in skew angle have the least impact. Furthermore, a comparative study examines the flow field around and downstream of the propellers under different operating conditions.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Comparative Analysis of the Impact of Geometrical Parameters on the Hydrodynamic Performance and Flow Characteristics of a Toroidal Propeller

  • 期刊论文

  • 发表日期：

    2025年7月16日

查看全文
  • Alireza Nadery,
  • Hossein Shafigh,
  • Amin Najafi,
  • Hassan Ghassemi,
  • S. Yasin Ziabari

摘要

This study parametrically explores the hydrodynamic characteristics of a toroidal propeller. Seven geometrical parameters (skew angle, pitch angle, chord length, rake, roll angle, blade alpha vertical angle, and blade section) are introduced, and their effects on thrust, torque, and efficiency are analyzed. The performance of the propellers is simulated using computational fluid dynamics based on the finite volume method. First, an open-water simulation is conducted for a common B-series propeller. The numerical results are compared with available experimental data, and an acceptable agreement is achieved. Then, the investigations were extended to the toroidal propeller by changing the seven geometrical parameters (±5%, ±10%, and ±20%). The analysis demonstrates hydrodynamic performance improvements relative to the B-series propeller. Numerical results indicate that changes in pitch angles exert the greatest influence on hydrodynamic efficiency, whereas variations in skew angle have the least impact. Furthermore, a comparative study examines the flow field around and downstream of the propellers under different operating conditions.