In order to analyze the flow field and performance change regulations of hydrocyclone caused by the blocked problem in downhole,the downhole inverted cone hydrocyclone was used as the study object,and the flow field characteristics and separation performance of the hydrocyclone were analyzed in six different blocked conditions by combining numerical simulation and experiment,and a quantitative characterization method of flow field asymmetry was proposed to clarify the change of the flow field and the average offset unsymmetry of the hydrocyclone under different blocked conditions.The results showed that in condition of three closely neighboring flow channels blocked,the average offset unsymmetry rates of both tangential and axial velocities produced maximum values of 67.82％and 34.99％.Compared with the non-blocked condition,the average pressure drop increases and the separation efficiency decreased in all six different blocked conditions,and working condition six in condition of four closely neighboring flow channels blocked,the average pressure drop was the largest and the separation efficiency was the smallest.The separation performance analysis under different blocked conditions was carried out,and the average error between the simulation results and the experimental results was 1.22％,which reflected a good consistency and proves the accuracy of the numerical simulation results.
关键词
计算流体力学/数值模拟/两相流/水力旋流器/速度场
Key words
computational fluid dynamics/numerical analysis/two-phase flow/hydrocyclone/velocity field
维普
万方数据