On inherent irreversibility in a reactive hydromagnetic channel flow

Abstract

This study is devoted to investigate the inherent irreversibility and thermal stability in a reactive electrically conducting fluid flowing steadily through a channel with isothermal walls under the influence of a transversely imposed magnetic field. Using a perturbation method coupled with a special type of Hermite-Pade´ approximation technique, the simplified governing non-linear equation is solved and the important properties of overall flow structure including velocity field, temperature field and thermal criticality conditions are derived which essentially expedite to obtain expressions for volumetric entropy generation numbers, irreversibility distribution ratio and the Bejan number in the flow field.

Group analysis and numerical computation of magneto-convective non-Newtonian nanofluid slip flow from a permeable stretching sheet

“…Maple has become increasingly popular in the 21st century and has been deployed by the authors to resolve many highly coupled, nonlinear thermomechanics problems. These include bioconvection flows as elaborated by Uddin et al (2013b, c), viscoelastic channel flows reader as examined by Bég and Makinde (2011), hydromagnetic entropy problems in hybrid aerospace propulsion as studied by Makinde and Bég (2010) and thermoelasticity of functional graded materials as described by Tounsi et al (2013). In the current problem, the asymptotic boundary conditions given in Eq.…”

Numerical investigation into entropy generation in a transient generalized Couette flow of nanofluids with convective cooling

“…The situation reversed with increasing magnetic field. Several studies have thoroughly dealt with conventional fluid flow irreversibility due to viscous effect and heat transfer by conduction (Narusawa 1998;Sahin 1998;Makinde & Aziz 2010;Makinde & Beg 2010). Numerous investigations to calculate entropy production and irreversibility due to flow and heat transfer of nanofluids over a moving flat surface were considered by .…”

Entropy Analysis for MHD Generalised Couette Flow in a Composite Duct

“…Makinde [13] conducted entropy generation study in a falling variable viscosity liquid film along an inclined heated plate with convective cooling. Makinde and Bég [14] performed the second law analysis to the problem of inherent irreversibility in a reactive hydromagnetic channel flow. Makinde and Eegunjobi [15] investigated effects of convective heating on entropy generation rate in a channel with permeable walls.…”