Entropy generation due to micro-rotating Casson's nanofluid flow over a nonlinear stretching plate: numerical treatment

Abstract

Objective: This article numerically investigates the entropy generation due to micro-rotating Casson's nanofluid along with an impact of an inclined magnetic field past a nonlinear stretching surface. Heat and mass transfer analysis is carried out in association with the heat source/sink and chemical reaction coefficient. Furthermore, heat dissipation is computed via viscous dissipation and joule heating phenomena. Attributes of nanofluid are disclosed by taking Brownian motion and thermophoresis phenomena. Results and conclusion: Numerical solutions of out-coming differential equations are obtained employing Runge–Kutta fourth-order with shooting technique. The behavior of multiple parameters has been displayed via graphs. Entropy profile is developed effectively for accelerating values of Hartmann and Brinkman number. Moreover, the temperature profile accelerates significantly with an enhancement in the heat transfer Biot number. Practice implications: The study of entropy generation due to micro-rotating Casson's nanofluid has numerous applications in engineering and heat-storing devices such as pumped heat electricity storage, phase change material, solar and geothermal power systems. The minimization of entropy plays a significant role in the design of the mechanical system that relies on heat transfer.

Keywords:

• Second law analysis
• Casson's nanofluid
• Brownian motion
• micro rotation
• inclined magnetic field

Disclosure statement

No potential conflict of interest was reported by the author(s).