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An exact solution for the entropy base °ow of electroosmotic
magneto-nano°uid through microparallel channel
M. Bilal
*,||
, Showkat Ahmad Lone
†
, Sadia Anwar
‡
, Sana Shahab
§
,
Seerat Fatima
*
, M. Ramzan
¶
and M. Nadeem
*
*
The University of Chenab, Gujrat 50700, Pakistan
†
Department of Basic Sciences,
College of Science and Theoretical Studies,
Saudi Electronic University,
Jeddah-M, Riyadh 11673, Kingdom of Saudi Arabia
‡
Department of Mathematics,
College of Arts and Sciences,
Wadi Ad Dawasir (11991),
Prince Sattam Bin Abdul Aziz University,
Al-Kharj, Kingdom of Saudi Arabia
§
Department of Business Administration,
College of Business Administration,
Princess Nourah bint Abdulrahman University,
P. O. Box 84428, Riyadh 11671, Saudi Arabia
¶
Department of Computer Science,
Bahria University 44000, Islamabad, Pakistan
||
me.bilal.786@gmail.com
Received 2 August 2023
Revised 4 October 2023
Accepted 22 October 2023
Published 9 February 2024
An exact solution of steady state, electroosmotic, transient magnetohydrodynamic (MHD) °ow,
and heat transfer of a viscous and incompressible electrically conducting nano°uid consists of
water and Cu metal, through a microparallel channel under the combined e®ect of pressure and
vertically acting magnetic ¯eld is found. An exact solution is calculated through Laplace
transform using the software of Mathematica to ¯nd the steady velocity and temperature ¯eld
depending on many dimensionless parameters. The electromagnetic couple e®ect, the volu-
metric generation of heat caused by the Joule heating e®ect, and viscous dissipation are con-
sidered to analyze the thermally fully formed heat °ow problem based on the steady part of the
velocity ¯eld. The exact result of the temperature ¯eld is obtained by taking the uniform
boundary heat °ux. The signi¯cant parameter of heat °ow known as the Nusselt number,
depending on the height of the microtube, is de¯ned. At last, the entropy generation of MHD
temperature °ow is analyzed. The interpretation of variations that occurred in internal and
external entropy generations is given and consequences are explained.
||
Corresponding author.
International Journal of Modern Physics B
Vol. 39, No. 1 (2025) 2550003 (23 pages)
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.
cWorld Scienti¯c Publishing Company
DOI: 10.1142/S0217979225500031
2550003-1