TY - JOUR AU - Gbadeyan, Jacob A. AU - Opanuga, Abiodun A. PY - 2018 TI - Inherent irreversibility analysis in a buoyancy induced magnetohydrodynamic couple stress fluid JO - Journal of Mathematics and Computer Science SP - 411--422 VL - 18 IS - 4 AB - This paper investigates the inherent irreversibility in a buoyancy induced magnetohydrodynamic (MHD) couple stress fluid through non-Darcian porous medium. It is assumed that the fluid exchanges heat with the ambient following Newtonian law. The governing Navier-Stoke and energy equations are formulated and non-dimensionalied, the approximate solutions for the velocity and temperature profiles are obtained via Adomian decomposition method. The results are used to calculate the entropy generation rate, and Bejan number. The effects of Buoyancy force, suction/injection, Hartman number and other flow parameters on velocity, temperature, entropy generation rate, and Bejan number are analyzed and discussed graphically. The results show that increase in Buoyancy force and suction/injection increases fluid velocity and temperature.Entropy generation rate becomes higher as the values of Buoyancy force, suction/injection parameter, and Hartman number increases. SN - ISSN 2008-949X UR - http://dx.doi.org/10.22436/jmcs.018.04.03 DO - 10.22436/jmcs.018.04.03 ID - Gbadeyan2018 ER - TY - JOUR TI - Second law analysis for third-grade fluid with variable properties AU - S. O. Adesanya JO - J. Therm. PY - 2014 DA - 2014// VL - 2014 ID - Adesanya2014 ER - TY - JOUR TI - Thermodynamics analysis of hydromagnetic third grade fluid flow through a channel filled with porous medium AU - S. O. Adesanya AU - J. A. Falade JO - Alexandria Eng. J. PY - 2015 DA - 2015// VL - 54 ID - Adesanya2015 ER - TY - JOUR TI - Effects of couple stress on entropy generation rate in a porous channel with convective heating AU - S. O. Adesanya AU - O. D. Makinde JO - Comput. Appl. Math. 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