同济大学学报（自然科学版）2025，Vol.53Issue(12)：1867-1874,8.DOI:10.11908/j.issn.0253-374x.25072
基于不可压缩光滑粒子流体动力学的海底地形变化对黏土滑坡运动的影响
Influence of Topographical Slope Variations on Movement Behavior of Viscous Submarine Landslides Based on Incompressible Smoothed Particle Hydrodynamics
摘要
Abstract
To address the challenges posed by intense hydrodynamic interaction between sliding masses and ambient water in submarine landslide dynamics,this paper developed a coupled two-phase flow(incompressible smoothed particle hydrodynamics)ISPH model incorporating particle shifting and gradient correction techniques to enhance numerical stability.The model was validated against underwater landslide experiments and then applied to analyze the impact of terrain variations on landslide evolution.The results indicate that the landslide exhibit the strongest dynamic performance at the characteristic corner,with the sliding distance increasing by approximately 14%compared to other conditions.Steeper slope changes tend to trigger fluid uplift,promoting particle dispersion and turbidity current formation,thereby increasing the risk of damage to underwater infrastructure.Unlike dry conditions,submarine landslides display a two-stage dynamic behavior,where momentum exchange between particles and fluid sustains continued motion over flat regions,partially explaining long-runout phenomena.关键词
海底地形变化/不可压缩光滑粒子流体动力学/黏土滑坡/运动特征Key words
topographical slope variations/incompressible smoothed particle hydrodynamics/viscous submarine landslides/movement behavior分类
天文与地球科学引用本文复制引用
靳晓言,石昊,刘蓓蕾,黄雨..基于不可压缩光滑粒子流体动力学的海底地形变化对黏土滑坡运动的影响[J].同济大学学报（自然科学版）,2025,53(12):1867-1874,8.基金项目
国家自然科学基金(42120104008) （42120104008）
