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Thermal Marangoni flow past a permeable stretching/shrinking sheet in a hybrid Cu-Al2O3/water nanofluid


Khashi'ie, Najiyah Safwa and Md. Arifin, Norihan and Pop, Ioan and Mohd Nazar, Roslinda and Hafidzuddin, Mohd Ezad Hafidz and Wahi, Nadihah (2020) Thermal Marangoni flow past a permeable stretching/shrinking sheet in a hybrid Cu-Al2O3/water nanofluid. Sains Malaysiana, 49 (1). pp. 211-222. ISSN 0126-6039


The present study accentuates the Marangoni convection flow and heat transfer characteristics of a hybrid Cu-Al2O3/water nanofluid past a stretching/shrinking sheet. The presence of surface tension due to an imposed temperature gradient at the wall surface induces the thermal Marangoni convection. A suitable transformation is employed to convert the boundary layer flow and energy equations into a nonlinear set of ordinary (similarity) differential equations. The bvp4c solver in MATLAB software is utilized to solve the transformed system. The change in velocity and temperature, as well as the Nusselt number with the accretion of the dimensionless Marangoni, nanoparticles volume fraction and suction parameters, are discussed and manifested in the graph forms. The presence of two solutions for both stretching and shrinking flow cases are noticeable with the imposition of wall mass suction parameter. The adoption of stability analysis proves that the first solution is the real solution. Meanwhile, the heat transfer rate significantly augments with an upsurge of the Cu volume fraction (shrinking flow case) and Marangoni parameter (stretching flow case). Both Marangoni and Cu volume fraction parameters also can decelerate the boundary layer separation process.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Science
Institute for Mathematical Research
Centre of Foundation Studies for Agricultural Science
DOI Number: https://doi.org/10.17576/jsm-2020-4901-25
Publisher: Penerbit Universiti Kebangsaan Malaysia
Keywords: Dual solutions; Hybrid nanofluid; Marangoni convection; Stability analysis; Suction
Depositing User: Nabilah Mustapa
Date Deposited: 14 Apr 2020 14:04
Last Modified: 14 Apr 2020 14:04
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.17576/jsm-2020-4901-25
URI: http://psasir.upm.edu.my/id/eprint/38078
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