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Hydrodynamics of shear thinning fluid in a square microchannel: a numerical approach

  • Sandeep Yadav , Bushra Khatoon , Shabih -Ul-Hasan and M. Siraj Alam EMAIL logo
Published/Copyright: August 14, 2023
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Abstract

In this present work, a numerical study was conducted for the formation of a slug bubble for shear thinning non-Newtonian fluid in a cross-junction 2-D square horizontal microchannel. Carboxymethyl cellulose (CMC) of concentration 0.2 (w/w%) percent was used as a continuous phase that shows the shear thinning behavior of non-Newtonian fluid and Nitrogen (N2) was used as the discrete phase. The pressure-based double precision solver was used in ANSYS FLUENT 2021 R2 with the volume of fluid (VOF) method. The finite volume method is applied for the discretization of the continuity and momentum equation. This article also focuses on the fluctuation of static pressure, mechanism of slug, annular, and churn annular flow i.e., obtained by the variation in the inlet velocities. On the other hand, a concept that was applied in this work was also validated with the prior literature data.


Corresponding author: M. Siraj Alam, Department of Chemical Engineering, Motilal Nehru National Institute of Technology, Allahabad, Prayagraj, Uttar Pradesh, 211004, India, E-mail:

  1. Research ethics: I agree with the statements and declaration that this submission follows the policies of “De Gruyter” academic publishing as outlined in the Guide for Authors and in the Ethical Statement.

  2. Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

  3. Conflict of interest statement: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

  4. Research funding: This work was supported by the MNNIT Allahabad.

  5. Data availability: Data can be provided on the request.

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Received: 2022-12-19
Accepted: 2023-07-20
Published Online: 2023-08-14

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