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<p>Addressing the issue of excessive cavitation pressure fluctuation on the propeller behind a catamaran, numerical simulation is conducted to assess the quality of the wake flow and to numerically predict the pressure fluctuation induced by the propeller cavitation. Additionally, the interaction between the wake vortex field and the propeller is investigated, revealing the presence of propeller-hull vortex. To improve the propeller's inflow quality, the impact of vortex generators on the wake flow and pressure fluctuation is numerically simulated. Then, numerical simulations are conducted to compare the cavitation pressure fluctuation of optimized propeller design, evaluating the effects of vortex generators at different spatial locations and angles of attack, to determine the optimal vortex generator scheme. A more comprehensive integrated control plan for the wake flow and the cavitation pressure fluctuation of the propeller behind the catamaran is finally formed.</p>

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Numerical study of the control of flow field and propeller cavitation pressure fluctuation behind the ship

  • 期刊论文

  • 发表日期：

    2025年6月1日

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  • Chao-sheng Zheng,
  • Kang Liu,
  • Deng-cheng Liu,
  • Fang-wen Hong,
  • Zhi-rong Zhang

摘要

Addressing the issue of excessive cavitation pressure fluctuation on the propeller behind a catamaran, numerical simulation is conducted to assess the quality of the wake flow and to numerically predict the pressure fluctuation induced by the propeller cavitation. Additionally, the interaction between the wake vortex field and the propeller is investigated, revealing the presence of propeller-hull vortex. To improve the propeller's inflow quality, the impact of vortex generators on the wake flow and pressure fluctuation is numerically simulated. Then, numerical simulations are conducted to compare the cavitation pressure fluctuation of optimized propeller design, evaluating the effects of vortex generators at different spatial locations and angles of attack, to determine the optimal vortex generator scheme. A more comprehensive integrated control plan for the wake flow and the cavitation pressure fluctuation of the propeller behind the catamaran is finally formed.