The high-quality steel is closely related to the physical mechanism of flow and heat transfer in liquid steel,molten slag and gas system during the steelmaking process.Considering surface heat dissipation from the melt pool and interface deformation of the molten slag and gas system with temperature-dependent surface tension,a flow and heat transfer model of two-dimensional slag and gas system in rectangular shallow melt pool was established.The CLSVOF method was used to investigate the Marangoni effect of molten slag and gas system in the melt pool.The results show that thermocapillary convection is much stronger than Marangoni convection in metallurgical molten slag and gas system,and it plays a dominant role in temperature distribution and flow pattern,with a contribution rate of about 96%.As the horizontal temperature difference between the vertical walls increases,the Marangoni-thermocapillary convection increases by about 0.018%/K.The interface deformation is intensified,and the uniformity of molten slag temperature is improved,but the corrosion of refractory materials on the wall near the phase interface becomes more severe.
关键词
冶金渣气系统/Marangoni-热毛细对流/水平壁面温差/CLSVOF/数值模拟/界面变形/表面
Key words
metallurgical molten slag and gas system/Marangoni-thermocapillary convection/horizontal temperature difference/CLSVOF/numerical simulation/interface deformation/surface heat dissipation
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基金项目
安徽省自然科学基金资助项目(1708085ME108)
冶金工程与资源综合利用安徽省重点实验室开发基金资助项目(SKF22-05)
安徽省大学生创新创业项目(S202310360410)
Natural Science Foundation of Anhui Province()
Open Project Foundation of Anhui Province Key Laboratory of Metallurgical Engineering&Resources Recycling()
Anhui Provincial College Student Innovation Training Program(S202210360413)
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