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Fluidodynamics

A strongly increasing role of Fluidodynamics modeling in steelmaking has been occurring during the last decades as a consequence of the stringent market demand for superior steels in terms of cleanliness and mechanical characteristics to be obtained at a lower development and production cost.

That has progressively made manufacturers aware of the strong benefits, and the money saving, achievable through assessing new processes, optimising layouts and improving products through the broad use of Computational Fluidodynamics (CFD).

 

Today, it has become a focus aspect for each step of the manufacturing cycle where fluids are fundamental and so far a wide set of different physical situations are taking advantage from such modelling application. As a matter of fact, the whole understanding of the multi-phase flow phenomena occuring in the direct iron ore smelting reduction vessels or in blust furnaces makes possible both setting the best-fit stirring and mixing conditions, and modelling how these contribute to the wear rate of refractory materials.

 

So, fluiddynamics can give an useful help in assessing the residual life of equipments or process machines, thus becoming a powerful tool in the hands of maintenance-people. But fluidodynamics is not only a simply computing affair.

 

Any predictive model derived from differential equations in order to represent such phenomena as the injection of gas into liquid bathes, the agitation and mixing of a liquid bath under different gas flow rates, the formation and growth of bubbles, the magnetic stirring streamlines distribution in moulds or in strip casting, or the arrangement of bottom-blown tuyeres in steel shop converters or tundish nozzles, needs to be experimentally tuned and verified. In this respect, the Similitude Laws gives a strong support to the experimental activity and so omputational and experimental fluidodynamics become the natural place where the ideas turn into new processes and plant concepts.

 

Fluidodynamics modelling is destined to be more and more part of complex thermo-mechanical and heat-exchange models, so to become a poweful and efficient tool for industrial design.

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