Orthogonal Experiments on the Key Structural Parameters Optimization of Mine Dust Removal Foam Generator by Fluent Numerical Simulation

As an important countermeasure of dust control in mine, the efficiency of foam generator is seriously affected by the key structural parameters itself, including the baffle inclination angle (θ), the disturbance flow distance (L) and the diffusion angle (α). To ascertain the relation of the three parameters, the axial cross section velocity field and gas phase distribution field in the foam generator were simulated by FLUNET software and mixture method, standard κ-ε turbulence model and SIMPLEC algorithm. At the same time, the orthogonal tests were conducted for reducing amount of calculation. The results show that when θ = 30°, L = 22mm, α = 74°, the foam generator is on the optimal working condition. And the importance degree of the key structural parameters is successively θ, L and α. It can play a certain reference role in the actual design of the foam generator for the dust removal technology improvement of the foam generator.