Modelling the temperature fi eld of a continuously cast strand is an important tool for the process diagnostics. Themain preconditions for numerical simulation of the temperature fi eld of the solidifying strand are correct boundaryconditions, especially the surface condition in the secondary zone of the caster. The paper deals with techniques ofdetermining the surface condition under cooling nozzles as well as their approximation and implementation intothe model algorithm. Techniques used for laboratory measurements of both cold and hot spraying characteristicsof water or water-air cooling nozzles are described. The relationship between the cold and hot characteristics wasfound. Implementation of such a dependence into the model algorithm reduces the duration and cost of laboratorymeasurements.
展开▼
