油管, 喷砂, 气固两相流, 数值模拟

 In order to confirm the technologic parameters on the outside blasting of tubing, a numerical simulation of solid-gas two-phase flow was performed under different operating conditions.A discrete particle model following the Eulerian-Lagrangian method was applied to the simulation. The Spalart-Allmaras turbulence model was applied to simulate the continuous phase flow field. The gas flow field characteristics were obtained. The particle-trajectory model was applied to compute the particle phase flow field. Then, the solid phase was injected in the gas flow field. The load cases of the particles can be calculated, the trajectory and velocity field of the particles will be obtained. The results show that, the velocity that the particle sprays on the tubing wall is biggest when the spray distance is 100mm and the particle diameter is between 0.5mm to 1.0mm. The whole outside wall of tubing can be sprayed under such condition, and thus the blasting performance may be the best. 

tubing, blasting, solid-gas two-phase flow, numerical simulation