Numerical calculation of circulation flow rate in RH process

摘要

Circulation rate of melt, one of the importantfactors which determine decarburization rates of RH system, wascalculated by a 3-dimensional numerical simulation technique. Anew model for analytic calculation of the shape and volume ofplume zone formed by side blowing of Ar gas was designed toobtain the driving force of melt circulation. Circulation flow rateswere measured in the 1/10 scale water model and in an actual RHoperation to verify the calculated results. The predicted circulationrates showed a good agreement with both experimental results.Because the new program can calculate the circulation rate withvarious operating conditions and dimensions of RH system, itcould be very helpful to determine the optimum operating con-ditions and to design new RH systems.