航空工程进展2026，Vol.17Issue(2)：62-68,7.DOI:10.16615/j.cnki.1674-8190.2026.02.07
基于ALE方法的圆柱入水固液分离特性研究
Research on characterization of solid-liquid separation of cylindrical water entry based on the ALE method
摘要
Abstract
The separation of the solid-liquid interface and the morphological evolution of the free surface during cyl-inder water entry are closely correlated with surface roughness.Based on the Arbitrary Lagrangian-Eulerian(ALE)method,which accounts for the friction characteristics of rough surfaces,this paper establishes finite ele-ment models for the vertical and oblique water entry of rough cylinders.The separation position and the characteris-tics of the free surface morphology are investigated.The validity of this numerical method is verified by comparing the simulation results with experimental data.Furthermore,the study focuses on analyzing the effects of varying surface roughness and entry velocities on the impact response and flow separation characteristics of the cylinder.The results show that the free liquid surface change of the cylinder water entry process simulated by the ALE meth-od is in good agreement with the test,and the upward velocity of the solid-liquid-gas three-phase contact line of the cylinder water entry on the rough surface is lower than that on the smooth surface,so that the liquid surface is easier to be separated from the surface of the cylinder;as the roughness decreases,the separation angle exhibits a trend of initially increasing,then decreasing,and finally increasing again;as the water entry velocity increases,the separation angle of the cylinder consistently decreases.关键词
任意拉格朗日—欧拉法/圆柱入水/流固耦合/冲击响应/粗糙度Key words
Arbitrary Lagrangian-Eulerian(ALE)method/water entry of cylinders/fluid-solid coupling/impact response/roughness分类
航空航天引用本文复制引用
成朝辉,万小豆,任选其,徐绯,惠旭龙,李肖成..基于ALE方法的圆柱入水固液分离特性研究[J].航空工程进展,2026,17(2):62-68,7.基金项目
国家自然科学基金(12272320) （12272320）
