Abstract
This paper investigated the behavior of the two-dimensional magnetohydrodynamics (MHD) nanofluid flow of water-based suspended carbon nanotubes (CNTs) with entropy generation and nonlinear thermal radiation in a Darcy–Forchheimer porous medium over a moving horizontal thin needle. The study also incorporated the effects of Hall current, magnetohydrodynamics, and viscous dissipation on dust particles. The said flow model was described using high order partial differential equations. An appropriate set of transformations was used to reduce the order of these equations. The reduced system was then solved by using a MATLAB tool bvp4c. The results obtained were compared with the existing literature, and excellent harmony was achieved in this regard. The results were presented using graphs and tables with coherent discussion. It was comprehended that Hall current parameter intensified the velocity profiles for both CNTs. Furthermore, it was perceived that the Bejan number boosted for higher values of Darcy–Forchheimer number.
Highlights
The novel idea to reduce entropy generation in heat transfer convective processes was floated byBejan [1]
It has been examined that energy dissipation and heat transfer owing to differences in temperatures are the key factors for entropy generation
It is noticed that value of the drag force coefficient is higher for α, φd, Fr, and M, but it declines for estimates of β and m for both types of carbon nanotubes (CNTs)
Summary
The novel idea to reduce entropy generation in heat transfer convective processes was floated by. Sheikholeslami and Shehzad [21] numerically examined the flow of nanofluid comprising Fe3 O4 -H2 O solution in a permeable cavity under the influence of a variable magnetic field using Control Volume Finite Element Method (CVFEM). They observed the highest heat transfer rate in the case of the platelet-shaped nanoparticles. Entropy optimization for the flow of Carreau nanofluid flow with cubic auto-catalysis chemical reaction was studied by Khan et al [22] analytically They noticed that the sturdier magnetic field boosted the entropy generation. Graphical sketches and tables were part of this study
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