MATHEMATICAL-MODELING OF DIVIDED BLAST CUPOLA

A pseudo 2-D mathematical model has been developed to simulate a cupol a with one row and two rows of tuyere. The simulation results predicte d higher spout temperature and combustion ratio for cupola with two ro ws of tuyere compared to that with one row. Further, the model has bee n used to study the effect of the distance of separation between the t wo rows of tuyere on cupola performance. The computed results shows th at the spout temperature increases with tuyere level separation and at tains the maximum at an optimum distance of separation between two row s of tuyere. Above the optimum, the spout temperature starts decreasin g. The exit gas temperature and combustion ratio increases monotonousl y with the increase in tuyere level separation. These results agree we ll with the reported experimental observations. The mechanism behind t he improved cupola performance with two rows of tuyere has been deduce d from the computed temperature and composition profiles inside the cu pola.