Citation:
Hengxu Yang,Dongqin Li,Feng Zhang.Numerical Analysis of the Hydrodynamic Performance Impact of Novel Appendage on Rim-driven Thruster[J].Journal of Marine Science and Application,2024,(4):762-775.[doi:10.1007/s11804-024-00475-6]
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Numerical Analysis of the Hydrodynamic Performance Impact of Novel Appendage on Rim-driven Thruster
Hengxu Yang,Dongqin Li,Feng Zhang.Numerical Analysis of the Hydrodynamic Performance Impact of Novel Appendage on Rim-driven Thruster[J].Journal of Marine Science and Application,2024,(4):762-775.[doi:10.1007/s11804-024-00475-6]
Info
- Title:
- Numerical Analysis of the Hydrodynamic Performance Impact of Novel Appendage on Rim-driven Thruster
- Author(s):
- Hengxu Yang; Dongqin Li; Feng Zhang
- Affilations:
- Keywords:
- Rim-driven thruster; Novel appendage; Computational fluid dynamics; Moving reference frame methodology; Propulsion efficiency
- DOI:
- 10.1007/s11804-024-00475-6
- Abstract:
- Addressing the ongoing challenge of enhancing propulsion efficiency in rim-driven thrusters (RDTs), a novel energy-saving appendage was designed to mitigate energy dissipation and improve efficiency. Computational fluid dynamics was utilized to examine the disparities in open-water performance between RDTs with and without this appendage. The Reynolds-Averaged Navier-Stokes equations were solved using the Moving Reference Frame approach within the established STAR-CCM+ software. The accuracy of these methodologies was confirmed through a comparison of numerical simulations with experimental data. A meticulous analysis evaluated the alterations in propulsion efficiency of RDTs pre- and post-appendage integration across various advance coefficients. Additionally, a comprehensive assessment of thrust and torque coefficient distributions facilitated a comprehensive understanding of the appendage’s energy-saving potential. Results demonstrated that the new appendage diminishes the diffusive wake behind the rotor disk, fostering a more uniform flow distribution. A notable reduction in the low-pressure zone on the rotor blade’s thrust side was observed, accompanied by an elevation in the high-pressure area. This generated a distinct pressure disparity between the blade’s thrust and suction sides, mitigating the low-pressure region at the blade tip and reducing the likelihood of cavitation. The manuscript further elucidates the rationale behind these alterations, providing detailed insights into flow field dynamics.
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Memo
- Memo:
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Received date:2023-12-6;Accepted date:2024-3-31。
Corresponding author:Dongqin Li,E-mail:lidq@just.edu.cn
