Separation flow through asymmetric periodic tubes

Nazmul Islam; Samuel J Stephen

doi:10.1016/j.padiff.2023.100511

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Separation flow through asymmetric periodic tubes

Journal article

Open access

Peer reviewed

Separation flow through asymmetric periodic tubes

Nazmul Islam and Samuel J Stephen

Partial Differential Equations in Applied Mathematics, Vol.7, pp.1-7

2023

DOI: https://doi.org/10.1016/j.padiff.2023.100511

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Abstract

Asymmetric periodic tube

Axisymmetric Stokes flow

Boundary integral technique

Geometric effect

Microfluidics

Separation zone

A systematic study of the impact of geometrical factors on separation flow characteristics within a longitudinally asymmetric but axially symmetric infinite periodic tube is presented throughout the main body of the paper. To disambiguate the inception of flow separation zones concerning the various geometrical aspects, we have undertaken a numerical study. The boundary integral technique is used for a periodic tube with an infinite number of wavesections to obtain the solution of the Stokes equation. For some amplitudes, we show that separation zones can be formed inside the enlarged areas of the tube. The first separation zone appears beyond a certain profile amplitude whereas the second separation zone is produced after the first separation zone at a larger amplitude. Also, the volume of the separation zone is discussed which has great physical importance, for example, it can be used in the particle separation process. The volume of the first separation zone is directly dependent on the amplitude of the tube profile. In this case, the volume increases as the tube amplitude increases.

Details

Title: Separation flow through asymmetric periodic tubes
Authors: Nazmul Islam (Corresponding Author) - University of South Australia
Samuel J Stephen - Griffith University
Publication details: Partial Differential Equations in Applied Mathematics, Vol.7, pp.1-7
Publisher: Elsevier BV
Date published: 2023
DOI: 10.1016/j.padiff.2023.100511
ISSN: 2666-8181
Data Availability: Data will be made available on request
Organisation Unit: School of Science, Technology and Engineering
Language: English
Record Identifier: 991091093402621
Output Type: Journal article

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