中文摘要：

采用数值模拟与理论分析方法,在4种黏度介质条件下,运用组合涡流场理论定量研究了介质黏度对旋流器内部流场影响程度.研究表明,在旋流器内部组合涡流场中,在主分离区,强制涡区域约占整个区域的27％,自由涡区域约占整个区域的63％,边界层区域约占整个区域的10％;在自由涡区域,自由涡运动指数n在中间区域逐渐增加,在外围区域基本保持不变或略有降低.研究进一步发现介质黏度对组合涡中的强制涡区域几乎没有影响,但对自由涡区域影响很大,随着介质黏度的增加,自由涡区域的运动指数n将逐渐降低,而且边界层厚度也逐渐增加.

英文摘要：

On bases of numerical simulation and theoretical analysis, four series of media were used in the same hydrocyclone under the same operating condition. The combined vortex flow fields of the four series and the effect of medium viscosity on the movement index n of combined vortex in a hydrocyclone were studied in quantification. The study results shown that along the radius of the hydrocyclone,the main separation region was consisted of forced vortex which occupies 27% of the whole domain,free vortex which occupied 63% of the whole domain and the boundary layer which was close to the hydrocyclone and occupied 10% of the whole domain;and in the free vor- tex area, free vortex movement index n increased gradually along the radius at first and then re- mained unchanged or dropped slightly. Contrast study results shown that medium viscosity had no effect on forced vortex,but it had great effect on free vortex. When medium viscosity was added the free vortex movement index n will lower simultaneously and at the same time boundary layer thickness will increase simultaneously.