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首页> 外文期刊>Steel Research International >Mathematical Modeling of Fluid Flow in Bath during Combined Side and Top Blowing AOD Refining Process of Stainless Steel: Application of the Model and Results
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Mathematical Modeling of Fluid Flow in Bath during Combined Side and Top Blowing AOD Refining Process of Stainless Steel: Application of the Model and Results

机译：不锈钢侧吹和顶吹AOD混合精炼过程中熔池中流体流动的数学模型：模型和结果的应用

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摘要

The mathematical model developed for the molten steel flow in the combined side and top blowing AOD refining process of stainless steel has been used to compute and analyze the flow fields of the liquid phases in the baths of the 1201 AOD converter and its water model unit with a 1 /4 linear scale. The influence of the side tuyere number and the angle between each tuyere on the flows has been examined. The results demonstrate that the mathematical model can quite reliably and well model and predict the fluid flow in an AOD bath with the combined blowing. The liquid flow in an AOD converter bath with the combined blowing is resulted from the gas side blowing streams under the influence of a gas top blowing jet. The streams play a governing role on it; and the liquid in the whole bath is in active agitation and circulatory motion during the gas blowing process. The gas jet from the top lance does not change the essential features of the gas stirring and liquid flow in the bath, but can make the local flow pattern of the bath liquid obviously vary and its turbulent kinetic energy enhance. The changes in the tuyere position and number have similarly not altered the basic characteristics and patterns of the gas agitation and liquid flow and turbulent kinetic energy distribution in the bath. At a given tuyere number and gas side blowing rate or a given angular separation between each tuyere and gas side blowing rate, however, the variation of the angle between each tuyere or the tuyere number can locally change them. Using 6 tuyeres with 27° can reach the more uniform flow field and turbulent energy distribution of the liquid in the bath than taking 7 tuyeres with 18° or 22.5° and 6 tuyeres with 22.5°.
机译：针对不锈钢侧吹和顶吹AOD精炼相结合的过程中的钢水流动建立的数学模型已用于计算和分析1201 AOD转炉及其水模型单元中的液相流场。 1/4线性刻度。检查了侧风口数和每个风口之间的角度对流动的影响。结果表明，该数学模型可以非常可靠地很好地建模和预测组合吹气在AOD浴中的流体流量。 AOD转炉熔池中的混合吹气是在气体顶吹射流的影响下，由气体侧吹流产生的。流在其中起着主导作用;在吹气过程中，整个熔池中的液体处于主动搅拌和循环运动中。从顶部喷枪喷出的气体不会改变气体搅拌和熔池中液体流动的基本特征，但可以使熔池液体的局部流动模式明显变化，并且其湍动能增强。风口位置和数量的变化同样没有改变浴中气体搅拌，液体流动和湍流动能分布的基本特征和模式。然而，在给定的风口数和气体侧吹气率或每个风口和气体侧吹气率之间的给定角间隔下，每个风口之间的角度或风口数的变化可以局部改变它们。与在18°或22.5°时使用7个风口和在22.5°时使用6个风口相比，使用27°的6个风口可以达到更均匀的流场和液体在浴中的湍流能量分布。

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