Heat transport and entropy generation in bioconvective sutterby nanofluid flow with gyrotactic microorganisms and chemical reaction

Abstract

The phenomenon of bioconvection in nanofluid flows represents a significant interdisciplinary research area that combines fluid dynamics, biotechnology, and nanotechnology. Understanding the interplay between biological organisms and nanoparticle-laden fluids is crucial for various applications in engineering, medicine, and environmental science. This study aims to scrutinize the production of entropy in bioconvective Sutterby nanomaterial flow over porous rotating disk. Impacts of surface roughness and Lorentz force are considered in relation to momentum. Mathematical expressions for energy and mass concentration are developed accounting Brownian and thermophoretic features of nanoparticles. Effects of thermal radiation and internal fluid friction are further measured in the thermal transport equation. Boundary layer norms are considered throughout modeling. PDEs demonstrating the flow are altered into ODEs via transformations. The numerical scheme Runge–Kutta-Fehlberg(RKF-45) is implemented via NDSolve code in Mathematica. The impacts of dominant parameters of flow on velocity, motile density, concentration, temperature, Bejan number, and irreversibility are deliberated. Physical quantities are studied numerically through tables. Results reveal that for larger magnetic and surface porosity variables velocity diminishes. The thermal field escalates for greater magnetic variable while it declines for higher Prandtl number. Entropy enhances for up surging values of radiation, diffusion, and Brinkman variables.