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A numerical study of flow around the submarine model SUBOFF under the rudder deflection condition is performed, considering the complex flow characteristics under the submarine maneuvering condition. Hydrodynamic forces and moments under rudder deflection conditions are calculated based on three different turbulence models, including the Unsteady Reynolds-Averaged Navier-Stokes (URANS) model, the Delayed Detached Eddy Simulation (DDES) model, and DDES with Improved wall-modeling capability (IDDES) model. The results are then compared with simulated values available in the literature. The hydrodynamic forces and moments obtained using the IDDES model are the most accurate. The hydrodynamic characteristics of the submarine are analyzed based on the flow field details such as vortex structures, velocity fields, streamline distribution, turbulence levels and pressure distribution obtained from the three turbulence models. The results show that the IDDES model can capture finer and more realistic flow field information, and can better predict the flow mechanisms under rudder deflection conditions.

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Numerical Simulation of Flow Around a Submarine Under the Rudder Deflection Condition Based on Different Turbulence Models

  • 会议论文

  • 发表日期：

    2025年

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  • Jianlong Huo,
  • Xiaohui Zhang,
  • Lei Zou,
  • Qimao Xu

摘要

A numerical study of flow around the submarine model SUBOFF under the rudder deflection condition is performed, considering the complex flow characteristics under the submarine maneuvering condition. Hydrodynamic forces and moments under rudder deflection conditions are calculated based on three different turbulence models, including the Unsteady Reynolds-Averaged Navier-Stokes (URANS) model, the Delayed Detached Eddy Simulation (DDES) model, and DDES with Improved wall-modeling capability (IDDES) model. The results are then compared with simulated values available in the literature. The hydrodynamic forces and moments obtained using the IDDES model are the most accurate. The hydrodynamic characteristics of the submarine are analyzed based on the flow field details such as vortex structures, velocity fields, streamline distribution, turbulence levels and pressure distribution obtained from the three turbulence models. The results show that the IDDES model can capture finer and more realistic flow field information, and can better predict the flow mechanisms under rudder deflection conditions.