Application of Computational Fluid Dynamics at the chair of ceramics
A main effort of the chair of ceramics is to clarify wear mechanisms of refractories. Refractories are used to prevent the steel shell of furnaces and aggregates form high temperatures. In high-temperature processes melts and slags occur. In addition to the thermo-mechanical load the refractory has to withstand the chemical attack of these liquid substances. Thereby the concurrent wear mechanisms are affected by the fluid dynamics of the melts and slags within the aggregate. To investigate this influence of the fluid flow CFD-simulations (computational fluid dynamics) are applied for example in the case of the laboratory rotary kiln that is used to determine the slagging resistance of refractories.
Fig.: Velocity vectors of air (blue) and slag (magenta) in the laboratory rotary kiln for different time steps