36
D. Li et al.
Boundary Conditions
There are 30 oxygen lances at the entrance of the matte, and the gas is compressible
due to the high inlet velocity (Ma > 0.5). The total oxygen-enriched air volume is
55,415 m
3 /h, the inlet velocity of a single oxygen lance is 250 m/s, the turbulent
intensity is 5%, the inlet pressure is 0.6 MPa, and the velocity at the wall is zero
under the non-slip boundary condition. The specific boundary condition parameters
are listed in the table below.
Model Validation
The gas–liquid two-phase flow process in the water model test device was photographed and analyzed. The accuracy of the simulation results was verified by
comparing the simulation results with the experimental results. The water model is
based on the bottom blowing furnace in Fig. 1 and is designed according to the ratio
of 1:10. The design dimensions and experimental parameters are listed in Table 2.
The bubble formation and buoyancy process in the water model were captured
by high-speed camera. It can be seen from Fig. 1, the experimental results and
the numerical simulation that the shape change of bubbles in the flow process is
basically the same. The injection states of single/double guns at different angles are
compared. From the comparison of the results of physical water model experiment
Fig. 1 Comparison of physical (top row) and numerical simulation (bottom row) results
D. Li et al.
Boundary Conditions
There are 30 oxygen lances at the entrance of the matte, and the gas is compressible
due to the high inlet velocity (Ma > 0.5). The total oxygen-enriched air volume is
55,415 m
3 /h, the inlet velocity of a single oxygen lance is 250 m/s, the turbulent
intensity is 5%, the inlet pressure is 0.6 MPa, and the velocity at the wall is zero
under the non-slip boundary condition. The specific boundary condition parameters
are listed in the table below.
Model Validation
The gas–liquid two-phase flow process in the water model test device was photographed and analyzed. The accuracy of the simulation results was verified by
comparing the simulation results with the experimental results. The water model is
based on the bottom blowing furnace in Fig. 1 and is designed according to the ratio
of 1:10. The design dimensions and experimental parameters are listed in Table 2.
The bubble formation and buoyancy process in the water model were captured
by high-speed camera. It can be seen from Fig. 1, the experimental results and
the numerical simulation that the shape change of bubbles in the flow process is
basically the same. The injection states of single/double guns at different angles are
compared. From the comparison of the results of physical water model experiment
Fig. 1 Comparison of physical (top row) and numerical simulation (bottom row) results