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<p>Water jet ice-breaking is a promising new auxiliary method for polar resource exploitation, but its feasibility and the effects of jet pressure and ice temperature on ice damage morphology and underlying mechanism remain unclear. In this study, experiments were conducted on water jet impacts on ice damage under varying jet pressures and ice temperatures. The high-speed camera was employed to observe morphological changes in ice during the ice-breaking process to reveal the underlying mechanisms. The results showed that increasing the jet pressure significantly enhanced the ice-breaking performance, with the erosion pit length increasing logarithmically with the jet pressure. From 2 to 15&#xa0;MPa, the erosion pit length increased by 146.4%. When the ice temperature increased from – 40 to – 10&#xa0;°C, the erosion pit depth increased by 13.6%. At lower ice temperatures, a recondensed ice layer formed on the inner walls, which reduced the effectiveness of jet erosion. Finally, the pressure gradient of the water jet formed conical erosion pits, and the deflection and reflection of the jet on the ice hole walls increased the depth of these erosion pits. Viscous effects within the boundary layer limited heat exchange between the inner wall of the erosion pit and the jet core region, which restricted the lateral expansion of the erosion pit. This study clarifies the impact of jet pressure and ice temperature on ice-breaking characteristics and provides theoretical guidance for the development of water jet-assisted ice-breaking technology in polar environments. </p>

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Impact of Jet Pressure and Ice Temperature on Erosion Pit Formation During Water Jet Ice-breaking

  • 期刊论文

  • 发表日期：

    2025年7月22日

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  • Zhaolong Ge,
  • Xuanyi Chen,
  • Binbin Ge,
  • Qinglin Deng,
  • Rongzheng Ge,
  • Jinming Cui

摘要

Water jet ice-breaking is a promising new auxiliary method for polar resource exploitation, but its feasibility and the effects of jet pressure and ice temperature on ice damage morphology and underlying mechanism remain unclear. In this study, experiments were conducted on water jet impacts on ice damage under varying jet pressures and ice temperatures. The high-speed camera was employed to observe morphological changes in ice during the ice-breaking process to reveal the underlying mechanisms. The results showed that increasing the jet pressure significantly enhanced the ice-breaking performance, with the erosion pit length increasing logarithmically with the jet pressure. From 2 to 15 MPa, the erosion pit length increased by 146.4%. When the ice temperature increased from – 40 to – 10 °C, the erosion pit depth increased by 13.6%. At lower ice temperatures, a recondensed ice layer formed on the inner walls, which reduced the effectiveness of jet erosion. Finally, the pressure gradient of the water jet formed conical erosion pits, and the deflection and reflection of the jet on the ice hole walls increased the depth of these erosion pits. Viscous effects within the boundary layer limited heat exchange between the inner wall of the erosion pit and the jet core region, which restricted the lateral expansion of the erosion pit. This study clarifies the impact of jet pressure and ice temperature on ice-breaking characteristics and provides theoretical guidance for the development of water jet-assisted ice-breaking technology in polar environments.