Optimalizace sklarske tavici pece metodou matematickeho modelovani

The theme of the presented degree thesis is "The optimalisation of glass melting furnaces using mathematical modellng". The description of processes, which are taking place during the glass melting, is for the high temperature very difficult. Therefore we can use either physical modelling or mathematical modelling. For mathematical modelling was the CFD (Computational Fluid Dynamics) code Fluent and Fluent/UNS used. The thesis is divided in three parts. In the first part, the combustion space of glass melting furnace was modelled, where the temperature distribution influence on fuel input was predicted. The influence was studied on the model of the FLOAT Nashville furnace. The modelled variants are proposed to simulate the temperature maximum shifting, extension of temperature maximum range, boosting using fuel input changing to the ports. The modelling results were compared with measured data (TC21) and with the results from other modelling laboratory (TNO). The results show very good agreement with measured data. The second part deals with melting tank modelling. This model was used to simulate the melting conditions during melting life of the furnace, where the corrosion has a very important influence on the cooling rate and on the throat-temperature. Using results from the modelling, it is possible to describe the relationship between the throat-temperature, size of the furnace and cooling rate (heat transfer through side walls). The last part deals with VELLO forehearth modelling where the relationships between pull rate, overflow rate, overflow location and refractories heat loss were studied. Using results from modelling was determined for the given pull rate of the optimum overflow rate, overflow location and the refractory heat lossAvailable from STL Prague, CZ / NTK - National Technical LibrarySIGLECZCzech Republi