MHD Casson Fluid Flow over a Stretching Sheet with Entropy Generation Analysis and Hall Influence

Area of Science:

• Fluid Dynamics
• Magnetohydrodynamics (MHD)
• Heat Transfer

Background:

• Casson fluid exhibits non-Newtonian behavior, relevant in various industrial applications.
• Magnetohydrodynamics (MHD) describes the dynamics of electrically conducting fluids in magnetic fields.
• Entropy generation and Hall effects are crucial factors influencing fluid flow and heat transfer efficiency.

Purpose of the Study:

• To numerically investigate the impacts of entropy generation and Hall current on MHD Casson fluid flow over a stretching surface.
• To analyze the influence of velocity slip factor on the fluid dynamics and thermal characteristics.
• To understand the interplay between various parameters like magnetic field, Reynolds number, and fluid properties on system irreversibility.

Main Methods:

• Governing equations for the MHD Casson fluid flow were established.
• A shooting method combined with a fourth-order Runge-Kutta integration scheme was employed for numerical analysis.
• Parametric studies were conducted to observe the effects of key physical parameters.

Main Results:

• Entropy generation was found to increase with magnetic parameter, Reynolds number, and group parameter.
• Conversely, entropy generation decreased with Hall parameter, Eckert number, Casson parameter, and slip factor.
• The Bejan number showed a reduction with an increase in the group parameter.

Conclusions:

• The study provides insights into optimizing fluid flow and minimizing irreversibility in MHD Casson fluid systems.
• Understanding these complex interactions is vital for designing efficient thermal and fluid systems.
• The findings contribute to the broader field of non-Newtonian fluid dynamics and heat transfer under magnetic influence.