Chaotic mixing performance of high-viscosity fluid synergistically intensified by flexible impeller and floating particles

LIU Zuohua; YANG Xianyan; XIE Zhaoming; LIU Renlong; TAO Changyuan; WANG Yundong

doi:10.3969/j.issn.0438-1157.2013.08.013

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Chaotic mixing performance of high-viscosity fluid synergistically intensified by flexible impeller and floating particles

更新时间：2025-12-10

- Chaotic mixing performance of high-viscosity fluid synergistically intensified by flexible impeller and floating particles
- CIESC Journal Issue 8, Pages: 2794-2800(2013)
- 作者机构：
  
  1. 重庆大学化学化工学院,重庆,400044
  2. 清华大学化学工程系,北京,100084
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2013.08.013
  CLC： Q027.2
- Online First：05 August 2013，
  
  Published：05 August 2013
- 稿件说明：
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LIU Zuohua, YANG Xianyan, XIE Zhaoming, et al. Chaotic mixing performance of high-viscosity fluid synergistically intensified by flexible impeller and floating particles[J]. CIESC Journal, 2013, (8): 2794-2800.
DOI：

LIU Zuohua, YANG Xianyan, XIE Zhaoming, et al. Chaotic mixing performance of high-viscosity fluid synergistically intensified by flexible impeller and floating particles[J]. CIESC Journal, 2013, (8): 2794-2800. DOI： 10.3969/j.issn.0438-1157.2013.08.013.

摘要

高黏度流体混合处于层流状态

存在混沌混合区和隔离区

混沌混合是提高其混合效率的有效方法。为增强高黏度流体的混沌混合

在甘油体系中采用柔性搅拌桨并加入自浮颗粒

实验研究了最大Lyapunov指数(LEmax)随单位体积功耗(Pv)的变化规律。结果表明

只加入固体颗粒对原体系LEmax的影响不大

当Pv=2000 W·m-3时

使用柔性桨后体系LEmax增加10.29%;柔性桨与固体颗粒协同作用时

可使体系LEmax增加30.86%。在Pv≤2000 W·m-3时

柔性桨和自浮颗粒协同强化高黏度流体混沌混合的效果最好。

Abstract

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.

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