Korean Journal of Chemical Engineering

, Volume 31, Issue 10, pp 1757–1765 | Cite as

Experimental investigation of mixing in a novel continuous chaotic mixer

  • Seyyed Mostafa HosseinalipourEmail author
  • Amir Tohidi
  • Payam Rahim Mashaei
  • Arun Sadashiv Mujumdar
Transport Phenomena


This paper presents and discusses results of an experimental study of laminar mixing of a highly viscous fluid (dough) in a continuous chaotic mixer. The mixer consists of an eccentric rotor that rotates co-axially within a stator, which results in chaotic advection. A dye injection technique was used to measure the mixing performance of the mixer. A mixing index was defined and computed by image processing of photographs of the exiting fluid from the mixer. Mixing characteristics were determined for constant as well as stepwise rotation of the rotor. Results revealed that mixing performance improves with increase in the rotational speed for constant rotational speed. The stepwise rotation case displayed better mixing performance than the constant speed case for stepwise changes of the amplitude as well as frequency of rotation.


Dough Mixer Highly Viscous Fluids Chaotic Advection Mixing Laminar 


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Copyright information

© Korean Institute of Chemical Engineers, Seoul, Korea 2014

Authors and Affiliations

  • Seyyed Mostafa Hosseinalipour
    • 1
    Email author
  • Amir Tohidi
    • 1
  • Payam Rahim Mashaei
    • 1
  • Arun Sadashiv Mujumdar
    • 2
    • 3
  1. 1.CFD and CAE Laboratory, Department of Mechanical EngineeringIran University of Science and TechnologyNarmak, TehranIran
  2. 2.Institute of Chemical TechnologyMumbaiIndia
  3. 3.Chemical & Biomolecular Engineering DepartmentHong Kong University of Science & TechnologyHong KongChina

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