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<p>This study investigates the sloshing characteristics of liquids in tanks, based on fluid–solid coupling dynamics. A numerical model is developed using the <i>three-step third-order Runge–Kutta</i> method to simulate Smooth Particle Hydrodynamics (SPH). The model's accuracy is validated through comparisons with experimental results. The sloshing behavior of the liquid is analyzed under varying excitation frequencies and filling ratios. Additionally, various baffle configurations are designed and optimized. The study specifically examines cases with large sloshing amplitudes, resonance frequencies, and a 50% filling ratio. The results reveal that the filling ratio has the most significant impact on the sloshing force. In high filling ratio scenarios, the sloshing force exhibits periodic behavior, while in low-filling ratio cases, the liquid surface is more prone to nonlinear phenomena. Furthermore, the implementation of a vertical baffle plate, with a height matching that of the free liquid surface, proves to be highly effective in mitigating sloshing.</p>

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Characterization of Spacecraft Tank Sloshing Based on a Smooth Particle Hydrodynamics Approach

  • 期刊论文

  • 发表日期：

    2025年3月12日

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  • Chaoqun Chen,
  • Yang Xu,
  • Xiaowei Sheng,
  • Guosheng Xie,
  • Zhiyu Ma

摘要

This study investigates the sloshing characteristics of liquids in tanks, based on fluid–solid coupling dynamics. A numerical model is developed using the three-step third-order Runge–Kutta method to simulate Smooth Particle Hydrodynamics (SPH). The model's accuracy is validated through comparisons with experimental results. The sloshing behavior of the liquid is analyzed under varying excitation frequencies and filling ratios. Additionally, various baffle configurations are designed and optimized. The study specifically examines cases with large sloshing amplitudes, resonance frequencies, and a 50% filling ratio. The results reveal that the filling ratio has the most significant impact on the sloshing force. In high filling ratio scenarios, the sloshing force exhibits periodic behavior, while in low-filling ratio cases, the liquid surface is more prone to nonlinear phenomena. Furthermore, the implementation of a vertical baffle plate, with a height matching that of the free liquid surface, proves to be highly effective in mitigating sloshing.