基于OpenFOAM的高温熔融锡液水力碎化数值模拟研究

Numerical Simulation of Hydraulic Fragmentation of High-Temperature Molten Tin Based on OpenFOAM

摘要: 为揭示高温熔融锡液与水相互作用过程中的碎化机理，基于开源软件包OpenFOAM®-v1806下的求解器icoReactingMultiphaseInterFoam模拟熔融锡液入水后的水力碎化过程，分析瑞利–泰勒不稳定性、开尔文–亥姆霍兹不稳定性及界面剪切力对熔融锡液柱碎化过程作用过程，探究水力碎化对液柱直径及液柱入水初速度对碎化剧烈程度的影响。研究表明液柱碎化剧烈程度、液柱单位时间内入水深度与液柱直径成反比，液柱入水后碎化剧烈程度、锡凝固速度与液柱入水时初速度成正比。

Abstract: In order to reveal the mechanism of fragmentation during the interaction between high-temperature molten tin and water, the icoReactingMultiphaseInterFoam solver within Open-FOAM®-v1806 was used to simulate the hydraulic fragmentation process of molten tin entering water. The effects of Rayleigh-Taylor instability, Kelvin-Helmholtz instability and interfacial shear force on the fragmentation process of molten tin were analyzed. And the sensitivity of the degree of fragmentation to the diameter of the liquid column and the initial velocity of the liquid column entering the water was explored. Research shows that the degree of fragmentation of the liquid column and underwater penetration in unit time are inversely proportional to the diameter of the liquid column. Meanwhile, the degree of fragmentation and the formation rate of solid tin are proportional to the initial speed of the liquid column entering water.