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Sophisticated Multi-phase Multi-flow Modeling of the Blast Furnace

机译：高炉的复杂多相多流建模

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This article introduces an improvement of an existing blast furnace total model called the Four Fluid Flow Model, maintained by the last author. The derivation of solid phase motion in the former model is now replaced by an external numerical code, which implements a very specific granular flow theory called hypoplasticity. The calculation method in the external solid flow model is based on the finite element method (FEM), and differs from the method used in the fluid flow model (finite volume method or FVM), hence their separation. Both models are run one after the other by exchanging data such as solid velocity field, drag forces and solid voidage , until convergence. One major issue of the additional solid flow model is its ability to calculate the shape of the dead man (the name of the stagnant zone inside the blast furnace), whereas its shape was prescribed in the fluid model. The solid flow model also introdencess stress state dependence on voidage, and takes into account source and sink terms related to solid phase physical and chemical transformations.
机译：本文介绍了最后一位作者维护的现有高炉总模型（称为四流体流模型）的改进。以前模型中的固相运动推导现在由外部数字代码代替，该代码实施了一种非常特殊的称为“塑性差”的颗粒流动理论。外部固体流模型中的计算方法基于有限元方法（FEM），与流体模型中使用的方法（有限体积法或FVM）不同，因此它们是分开的。通过交换诸如固体速度场，阻力和固体空隙率之类的数据，直到收敛为止，这两个模型彼此接连运行。附加固体流模型的一个主要问题是它能够计算死者的形状（高炉内部停滞区的名称），而其形状是在流体模型中规定的。固体流动模型还引入了应力状态对空隙的依赖性，并考虑了与固相物理和化学转变有关的源和汇项。

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