ISIJ International
Online ISSN : 1347-5460
Print ISSN : 0915-1559
ISSN-L : 0915-1559
Regular Article
Three-dimensional Compressible Flow Simulation of Top-blown Multiple Jets in Converter
Wenjing WangZhangfu YuanHiroyuki MatsuuraHongxin ZhaoCheng DaiFumitaka Tsukihashi
Author information
JOURNAL FREE ACCESS

2010 Volume 50 Issue 4 Pages 491-500

Details
Abstract

A three-dimensional mathematical model has been developed to simulate the compressible jets flow from the top-blown lance with multi-nozzles in converter to a free surrounding domain. The variations of fluid density and viscosity, high temperature, and Mach number were taken into consideration in this model which was validated against the physical modeling results. More specifically, computations were obtained to compare the widely used realizable k–ε turbulence model against the standard k–ω turbulence model, which shows that the latter one is superior to calculate diverse turbulent conditions within the multiple jets. Moreover, the coalescence pattern of the multiple jets has been illustrated by their Mach number distribution, and each individual jet proceeds in a curve course, bending to the lance center and tending to unite. The effects of the inclination angles on the jets coalescence were also investigated, which indicates that the lower the inclination angle is, the stronger the interfering extent between the multiple jets is. With the help of this model, the dynamic power of the multiple jets to support the cavity formation was demonstrated, and additionally, a mathematical model concerning the effective penetration radius and digressing path of the multiple jets was proposed by taking the inclination angle and the axial distance from the nozzle tips as arguments.

Content from these authors
© 2010 by The Iron and Steel Institute of Japan
Next article
feedback
Top