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超音速氧气射流喷吹工艺是炼钢过程的重要技术,通过在主氧周围增加环状高温伴随流是改善主氧射流特性、提高冶炼效率的重要途径。通过数值模拟的方法研究集束射流条件下环氧温度对超音速氧气射流特性的影响。研究结果表明,高温环氧可抑制超音速主射流速度的衰减,环氧温度越高,速度衰减越慢,射流核心区长度明显延长;不同环氧温度下,主射流温度均呈现先增大后减小的趋势,环氧温度的升高使得主射流温度的快速增长受到抑制;环氧在主射流周围形成高温低密度区域,将主射流与环境介质隔离,延缓主射流与周围介质的掺混,对主射流起到封套作用。
Supersonic oxygen jet injection process is an important technology in the steel making process. It is an important way to improve the main oxygen jet characteristics and increase the smelting efficiency by increasing the annular high temperature accompanying flow around the main oxygen. The influence of epoxy temperature on the supersonic oxygen jet flow under the condition of the cluster jet was studied by means of numerical simulation. The results show that high temperature epoxy can suppress the attenuation of the supersonic jet velocity. The higher the epoxide temperature, the slower the velocity decay and the longer the length of the jet core. At different epoxide temperatures, the temperature of the jet increases firstly Decreases, and the rapid increase of epoxy temperature restrains the rapid growth of main jet temperature. Epoxy forms high temperature and low density area around the main jet, isolates the main jet from the environmental medium and delays the mixing of the main jet and the surrounding medium , Play an envelope role on the main jet.