In order to reveal distribution of
concentration field about 3D gas particle two phase at the course of turbulent flow
in BF tuyere due to the
pulverized coal injection, two types of lance, one is not improved and the other is improved, are researched. Under the condition of using the basic law of the conservation of mass, of momentum and the balance of mixing component, a mathematical model of turbulent flow about 3D gas particle two phase inside the BF tuyere is established. Turbulent flow about 3D gas particle two phase is characterized by the k ε model. And on the basis of simple method, different numerical methods are applied according to the interconnection features between variable and the computational region. Three kinds of different diametral particles are simulated to reveal the turbulent flow about 3D gas particle two phase in BF tuyere due to the pulverized coal injected by two different types of lance. The results of calculation show that the degree that the lance with multiple holes can greatly reduce consistence of pulverized coal particle in BF tuyere, which will be more obvious with the increase of diameter of particle. When the diameter of particle is 100 μm,
concentration of pulverized coal particle is twenty times less than before. When the diameter of particle is 75 μm, concentration of pulverized coal particle is ten times less than before. When the diameter of particle is 50 μm, concentration of pulverized coal particle is five times less than before, which is corresponded with the results of experiment results.