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<p>This study investigates the mixed bioconvective flow of Ree-Eyring nanofluid addressing the effects of Brownian movement, thermophoresis, and motile microorganisms. The Hall current effect is also incorporated into the analysis, and entropy generation is quantified using the Bejan number. Both numerical (NDSolve) and semi-analytical (homotopy analysis method, HAM) techniques are employed to explore the flow characteristics. The results show that entropy generation and the Bejan number increase with higher radiation, Brownian motion, and Hall factor. Furthermore, the cross-flow velocity is looked to be enhanced with increasing Hall factor. In addition to this, heat distribution factor rises with increasing radiation, nanoparticle Brownian motion, and thermophoretic parameter, while mass distribution is primarily influenced by thermophoretic factor and bioconvection for concentration. The heat transfer rates, a key factor, near the surface also amplified with radiation and Biot number, while motile microorganism density and mass transfer rates are enhanced with increasing Brownian movement, Peclet number, bioconvective Lewis parameter, chemical reaction, and Schmidt number. This research has significant applications in material science, chemical engineering, advanced manufacturing, and industrial process optimization. Understanding the influence of Hall current, alongside other key factors, is crucial for optimizing heat management, fluid dynamics, and enhancing thermal and mass transfer efficiency in systems such as cooling technologies, chemical reactors, and nanofluid-based devices. The findings contribute to improving productivity and energy efficiency in various industrial applications.</p>

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Mixed convection flow on the Hall current effect of Ree-Eyring nanomaterial with gyrotactic microorganism and heat radiation flow

  • 期刊论文

  • 发表日期：

    2025年4月29日

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  • M. Vinodkumar Reddy,
  • Jintu Mani Nath,
  • Tusar Kanti Das,
  • Farhan Ali,
  • Nehad Ali Shah

摘要

This study investigates the mixed bioconvective flow of Ree-Eyring nanofluid addressing the effects of Brownian movement, thermophoresis, and motile microorganisms. The Hall current effect is also incorporated into the analysis, and entropy generation is quantified using the Bejan number. Both numerical (NDSolve) and semi-analytical (homotopy analysis method, HAM) techniques are employed to explore the flow characteristics. The results show that entropy generation and the Bejan number increase with higher radiation, Brownian motion, and Hall factor. Furthermore, the cross-flow velocity is looked to be enhanced with increasing Hall factor. In addition to this, heat distribution factor rises with increasing radiation, nanoparticle Brownian motion, and thermophoretic parameter, while mass distribution is primarily influenced by thermophoretic factor and bioconvection for concentration. The heat transfer rates, a key factor, near the surface also amplified with radiation and Biot number, while motile microorganism density and mass transfer rates are enhanced with increasing Brownian movement, Peclet number, bioconvective Lewis parameter, chemical reaction, and Schmidt number. This research has significant applications in material science, chemical engineering, advanced manufacturing, and industrial process optimization. Understanding the influence of Hall current, alongside other key factors, is crucial for optimizing heat management, fluid dynamics, and enhancing thermal and mass transfer efficiency in systems such as cooling technologies, chemical reactors, and nanofluid-based devices. The findings contribute to improving productivity and energy efficiency in various industrial applications.