侧吹金属熔池内的搅动现象

来源期刊：中南大学学报(自然科学版)2003年第2期

论文作者：詹树华 赖朝斌 萧泽强

文章页码：148 - 151

关键词：氩氧脱碳;金属熔池;气液两相流

Key words：argon-oxygen decarburization; metallic bath; gas-liquid two-phase flow

摘    要：针对浸入式侧吹高碳锰铁快速脱碳技术,研究了侧吹熔池内的三维流动特征.对气体喷吹熔池进行实测,以测量结果为基础,用CFD的方法对熔池中气体射流行为进行三维数值计算研究,在计算中考虑了气液相间的滑移和气泡形成阻力对流体流动的影响.研究结果表明:G.A.Irons等有关熔池浸入式侧吹射流的描述方法用于描述金属熔池的射流行为不恰当,为此,对其进行了修正.研究结果表明,修正后浸入式侧吹能更有效吸收气体流股的冲击能量,减少喷溅,熔池中易于形成有利于体系混合的环流,因而有利于高碳锰脱碳过程的进行.

Abstract: Gas side-blown technology has been widely used in refining and extraction process of metals. The flow pattern in side-blown metallic bath is studied when developing fast decarburization of high carbon manganese ferrous technology for Xinyu Iron & Steel Coorperation. The experimental results show that it is inappropriate to use the description model proposed by szekely etc, which is used to describe flow feature of side-blown jet, to describe the flow pattern in side-blown metallic bath. Based on experimental results, CFD method is used in analysis of flow feature in side-blown AOD, calculation is done in three dimensions. In order to calculate CFD, the inter-phase slip is considered with IPSA algorithm, buoyancy force, turbulent dispersion force, and dense particle effects etc are integrated. Results show that CFD calculation is a promising constructive tool for side-blown AOD design.