Influence of coriolis force and nanoparticle aggregation on entropy generation and thermal conductivity in dusty nanofluid flow: a numerical investigation

The present research introduces a novel framework for analyzing dusty nanofluid flow within a rotating frame, emphasizing the combined influence of nanoparticle aggregation, viscous dissipation, radiation, porous medium effects, and Coriolis force. The study's novelty lies in integrating these coupled mechanisms with entropy generation analysis to provide a unified thermofluid model. This model offers fresh insights into how radiation-rotation coupling, aggregation, and porous resistance reshape momentum and thermal transport in dusty nanofluid systems. The governing partial differential equations are transformed into nonlinear ordinary differential equations using similarity variables and solved numerically via MATLAB's bvp4c solver. Validation is established by comparing the results with published studies for limiting cases. The findings indicate that while aggregation reduces velocity, it increases the Nusselt number and temperature. Coriolis forces increase transverse flow and thicken the thermal layer, while radiation increases temperature and heat transfer but diminishes the axial flow. Aggregation lowers the Nusselt and Bejan numbers by about 20% and 15%, respectively. These results provide practical insights for the design of thermal management and nuclear cooling systems, rotating thermal-fluid systems such as filtration processes, aerosol technology, rotating energy devices, and environmental engineering applications.