Nowadays, coherent and conventional supersonic jets are widely used in
electric arc furnace (EAF)steelmaking processes. Generally, these jets are
installed in the EAF oven wall with a tilt angle of 35-45?. However, limited
studies have been conducted on the impact characteristics of these inclined
supersonic jets. This study developed an optimized theoretical model to
calculate the penetration depth of inclined coherent and conventional
supersonic jets by combining theoretical modeling and numerical simulations.
The computational fluid dynamics results are validated against water model
experiments. A variable k is newly defined to reflect the velocity
variation, which is related to the jet exit at the jet free distance. The
results of the optimized theoretical model show that the lance height and
lance angle influence the penetration depth of the inclined supersonic jet.
At the same lance angle, the penetration depth decreases with the increase in
the lance height. Similarly, it decreases with the decrease in lance angle at
the same lance height. In addition, the penetration depth of an inclined
coherent supersonic jet is larger than that of an inclined conventional
supersonic jet under the same conditions. An optimized theoretical model
can accurately predict the penetration depths of the inclined coherent and
conventional supersonic jets.