科考船极端海况下砰击载荷与液体飞溅特性数值模拟

Numerical simulation of slamming load and fluid splashing characteristics of scientific research vessels under extreme sea conditions

  • 摘要: 科考船在科考航行时可能遭遇极端恶劣海况,研究科考船极端海况下砰击载荷和液体飞溅特性,对保障科考人员安全和科考设备性能具有重要意义。文章以“中山大学”号科考船为例,基于光滑粒子流体动力学(SPH)方法,建立\textδ-SPH流固耦合动力学模型,开展了科考船遭遇极端海况的SPH数值模拟,预测极端海况下船体受到的砰击载荷、甲板上浪和液体飞溅程度,并分析其影响因素和物理机制。结果表明,当波高越大,波长越接近船长,船体受到的砰击载荷越大,甲板上浪和液体飞溅程度也越显著。该结果为极端海况下操纵与控制科考船、保障科考船上人员安全及设备性能提供了依据。

     

    Abstract: Scientific research vessels may encounter extreme sea conditions during research voyages. It is of great significance to study the slamming load and fluid splashing characteristics of scientific research vessels under extreme sea conditions to ensure the safety of scientific personnel and the performance of scientific equipment. The article takes the Sun Yat-sen University scientific research vessel as an example, based on the smoothed particle hydrodynamics (SPH) method, establishes a \textδ-SPH and fluid structure coupling dynamic model, and carries out SPH numerical simulation of the scientific research vessel encountering extreme sea conditions. It predicts the slamming load, the degree of deck wetness and fluid splashing under extreme sea conditions, and analyzes its influencing factors and physical mechanisms. The results indicate that as the wave height increases and the wavelength approaches the captain, the slamming load on the hull increases, and the degree of deck wetness and fluid splashing becomes more significant. The results provide a basis for maneuvering and controlling scientific research vessels under extreme sea conditions, ensuring the safety of personnel and equipment performance on scientific research vessels.

     

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