Entropy generation in radiative motion of tangent hyperbolic nanofluid in presence of activation energy and nonlinear mixed convection |
| |
Authors: | M Ijaz Khan Sumaira Qayyum T Hayat M Imran Khan A Alsaedi Tufail Ahmad Khan |
| |
Institution: | 1. Department of Mathematics, Quaid-I-Azam University 45320, Islamabad 44000, Pakistan;2. Nonlinear Analysis and Applied Mathematics (NAAM) Research Group, Department of Mathematics, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia;3. Heriot Watt University, Edinburgh Campus, Edinburgh EH14 4AS, United Kingdom;4. Department of Basic Sciences, University of Engineering & Technology, Peshawar, Pakistan |
| |
Abstract: | In this communication, an optimization of entropy generation is performed through thermodynamics second law. Tangent hyperbolic nanomaterial model is used which describes the important slip mechanism namely Brownian and thermophoresis diffusions. MHD fluid is considered. The novel binary chemical reaction model is implemented to characterize the impact of activation energy. Nonlinear mixed convection, dissipation and Joule heating are considered. Appropriate similarity transformations are implemented to get the required coupled ODEs system. The obtained system is tackled for series solutions by homotopy method. Graphs are constructed to analyze the impact of different flow parameters on entropy number, nanoparticle volume concentration, temperature and velocity fields. Total entropy generation rate is calculated via various flow variables. It is noticed from obtained results that entropy number depend up thermal irreversibility, viscous dissipation and Joule heating irreversibility and concentration irreversibility. Decreasing behavior of concentration is witnessed for higher estimations of chemical reaction variable. Entropy number is more for higher Hartmann number, Weissenberg number and chemical reaction variable while contrast behavior is noted for Bejan number. |
| |
Keywords: | Entropy generation Tangent hyperbolic nanofluid Joule heating Viscous dissipation Nonlinear mixed convection Nonlinear thermal radiation Activation energy |
本文献已被 ScienceDirect 等数据库收录! |
|