This paper examines the combined effects of the buoyancy force and of the magnetic field on the entropy generation rate in the flow of a couple stress fluid through a porous vertical channel. The flow's dynamical equations were non-dimensionalised and solved via the application of the Adomian decomposition method (ADM). Variations of some thermo-physical parameters were conducted and discussed, with regard to the physics of the fluid. Our result shows that the entropy generation rate increases as the buoyancy increases in the fluid. In addition, the irreversibility in the flow system results mainly from the fluid's viscosity, ohmic heating, and the buoyancy.

Accepted:

Published online:

Semiu O. Kareem ^{1};
Samuel O. Adesanya ^{2};
Uchechukwu E. Vincent ^{1, 3}

@article{CRMECA_2016__344_8_547_0, author = {Semiu O. Kareem and Samuel O. Adesanya and Uchechukwu E. Vincent}, title = {Second-law analysis for buoyancy-driven hydromagnetic couple stress fluid flow through a porous channel}, journal = {Comptes Rendus. M\'ecanique}, pages = {547--555}, publisher = {Elsevier}, volume = {344}, number = {8}, year = {2016}, doi = {10.1016/j.crme.2016.03.003}, language = {en}, }

TY - JOUR AU - Semiu O. Kareem AU - Samuel O. Adesanya AU - Uchechukwu E. Vincent TI - Second-law analysis for buoyancy-driven hydromagnetic couple stress fluid flow through a porous channel JO - Comptes Rendus. Mécanique PY - 2016 SP - 547 EP - 555 VL - 344 IS - 8 PB - Elsevier DO - 10.1016/j.crme.2016.03.003 LA - en ID - CRMECA_2016__344_8_547_0 ER -

%0 Journal Article %A Semiu O. Kareem %A Samuel O. Adesanya %A Uchechukwu E. Vincent %T Second-law analysis for buoyancy-driven hydromagnetic couple stress fluid flow through a porous channel %J Comptes Rendus. Mécanique %D 2016 %P 547-555 %V 344 %N 8 %I Elsevier %R 10.1016/j.crme.2016.03.003 %G en %F CRMECA_2016__344_8_547_0

Semiu O. Kareem; Samuel O. Adesanya; Uchechukwu E. Vincent. Second-law analysis for buoyancy-driven hydromagnetic couple stress fluid flow through a porous channel. Comptes Rendus. Mécanique, Volume 344 (2016) no. 8, pp. 547-555. doi : 10.1016/j.crme.2016.03.003. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2016.03.003/

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