CFD simulation of an industrial hydrocyclone with Eulerian-Eulerian approach: A case study

In the present study, a three-dimensional computational fluid dynamics simulation together with experimental field measurements was applied to optimize the performance of an industrial hydrocyclone at Sarcheshmeh copper complex. In the simulation, the Eulerian–Eulerian approach was used for solid and liquid phases, the latter being water. In this approach, nine continuous phases were considered for the solid particles with different sizes and one continuous phase for water. The continuity and momentum equations with inclusion of buoyancy and drag forces were solved by the finite volume method. The k–e RNG turbulence model was used for modeling of turbulency. There was a good agreement between the simulation results and the experimental data. After validation of the model accuracy, the effect of inlet solid percentage, pulp inlet velocity, rod inserting in the middle of the hydrocyclone and apex diameter on hydrocyclone performance was investigated. The results showed that by decreasing the inlet solid percentage and increasing the pulp inlet velocity, the efficiency of hydrocyclone increased. Decreasing the apex diameter caused an increase in the hydrocyclone efficiency.

基于CFD方法的船舶阻力计算方法探讨

为提高船舶阻力的计算精度，采用cFD方法分析了网格密度、湍流模式、出流边界和对流项离散格式等因素对船阻力计算的影响、探讨了网格加密技术、适用的湍流模型、合适的出口条件、不同的对流项离散格式等措施对阻力性能预报的可行性，计算结果与试验值比较得出：当采用网格加密技术、SSTk-w模型、压力出口边界、对流项修正（a=0.8）时，船舶阻力计算结果具有更高精度。