Chaotic mixing performance of high-viscosity fluid synergistically intensified by flexible impeller and floating particles
Chaotic mixing performance of high-viscosity fluid synergistically intensified by flexible impeller and floating particles
复制标题
DOI：
--
复制
发表时间：
2013
期刊：
影响因子：
--
通讯作者：
Wang Yundong
中科院分区：
文献类型：
--
作者：
Wang Yundong
高粘度层流混合系统同时存在混沌混合区域和孤立混合区域。增加混沌混合是增强混合性能的有效方法。为了在高粘度流体混合系统中获得良好的混合性能，在甘油混合系统中采用柔性叶轮和漂浮颗粒相结合。得到最大李亚普诺夫指数(LEmax)，研究两者之间的关系。 结果表明,仅添加漂浮颗粒对LEmax没有影响,而柔性叶轮有助于增大LEmax。当Pv为2000 W·m-3时,使用柔性叶轮可使一次系统LEmax增大10.29%,当漂浮颗粒与柔性叶轮共同作用时,LEmax可增大 30.86%。在低Pv(Pv≤2000 W·m-3)下,漂浮颗粒与柔性叶轮协同对高粘度流体的混沌混合效果明显优于传统涡轮叶轮系统。
There are both a chaotic mixing region and an isolated mixing region for the high-viscosity laminar flow mixing system.Increasing chaotic mixing is the effective method to enhance mixing performance.To obtain good mixing performance in the high viscosity fluid mixing system,flexible impeller together with floating particles were used in the glycerol mixing system.The largest Lyapunov exponent(LEmax)was obtained to study the relationship between chaotic mixing degree and power consumption(Pv).It indicated that only adding the floating particles had no effect on LEmax,but the flexible impeller could contribute to enlarging LEmax.When Pv was 2000 W·m-3,the LEmax of the primary system could be enlarged by 10.29% while using flexible impeller,and when floating particles and flexible impeller worked together,LEmax could be enlarged by 30.86%.At a low Pv(Pv≤2000 W·m-3),the chaotic mixing of high-viscosity fluid using floating particles synergistically with flexible impeller was much better than the system using the traditional turbine impeller.