Entropy generation minimization (EGM) in magneto peristalsis with variable properties.

Area of Science:

• Fluid dynamics
• Heat transfer
• Thermodynamics

Background:

• Peristaltic transport is crucial in biological and industrial systems.
• Understanding fluid behavior in curved, porous channels with variable properties is complex.
• Entropy generation quantifies irreversibility in thermodynamic processes.

Purpose of the Study:

• To investigate the peristaltic flow of a viscous fluid with temperature-dependent viscosity and thermal conductivity.
• To analyze entropy generation and Bejan number under velocity and thermal slip conditions.
• To explore fluid transport through porous channel walls in a curved configuration.

Main Methods:

• Utilized a wave frame of reference with long wavelength and small Reynolds number approximations.
• Solved the dimensionless governing equations numerically.
• Analyzed the impact of variable fluid properties and slip conditions on flow characteristics.

Main Results:

• Entropy generation is minimal near the channel center and maximal near the walls.
• Bejan number exhibits an inverse relationship with entropy generation.
• Variable viscosity and thermal conductivity significantly influence velocity and temperature profiles.

Conclusions:

• Variable fluid properties have opposing effects on velocity and temperature.
• Higher variable viscosity and thermal conductivity lead to reduced irreversibility near channel walls.
• The study provides insights into optimizing flow and minimizing energy loss in such systems.