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Numerical simulation of interaction during the top blow in a steel-making converter

机译:炼钢转炉顶吹过程中相互作用的数值模拟

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The numerical modeling of interaction between oxygen high-pressure jets and a liquid-metal surface in a steel-making converter, where, under the force action of the jets, a cavern with a hydrodynamically unstable surface forms in the metal bulk, is studied. A simplified scheme of chemical reactions and mechanisms of metal-drop dispersing from the interface between the phases is proposed. This scheme permits an adequate description of the hydrodynamic flow pattern in the cavern. The modeling of a two-phase turbulent flow in the cavern is considered within the framework of the continuum model based on the averaged Navier-Stokes equations. To close the equations, a modified k-s turbulence model is used, which takes into account the presence of the second phase. The flow structure in the cavern is studied. Practical recommendations for increasing the efficiency of the carbon-monoxide afterburning process in the cavern are given.
机译:炼钢转炉中氧气高压射流与液态金属表面之间相互作用的数值模型,其中在射流的作用下,研究了在金属本体中形成具有流体动力学不稳定表面的洞穴。提出了一种化学反应的简化方案,以及从各相之间的界面分散金属滴的机理。该方案允许对洞穴中的流体动力流型进行充分描述。基于平均的Navier-Stokes方程,在连续模型的框架内考虑了洞穴中两相湍流的建模。为了关闭方程式,使用了修正的k-s湍流模型,该模型考虑了第二相的存在。研究了洞穴中的流动结构。给出了提高洞穴中一氧化碳后燃过程效率的实用建议。

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