关键词: 旋流器, 数值模拟, 油水分离, 浓度场

Abstract:

The oil-phase concentration distribution in a vane-guided hydrocyclone was numerically simulated with the Reynolds stress model and Euler-Euler method.The effects of operating parameters, physical parameters and air core on the oil-phase concentration field were studied.Predictions are in reasonable agreement with the experimental results.The oil concentration decreased as the radial position increased and as the axial position decreased in the water-oil flow field.The analysis with Stokes law showed that the tendency of oil moving to the axis and overflowing out increased with the increase of inlet velocity, density difference of oil and water, and inlet concentration.Moreover, the air core changed the concentration distribution in the hydrocyclone, so that water, oil and air formed a water-oil-air flow field from wall to axis.

Key words: 旋流器, 数值模拟, 油水分离, 浓度场