Computational examination of heat and mass transfer of nanofluid flow across an inclined cylinder with endothermic/exothermic chemical reaction

Abstract

The consequence of thermal performance and mass distribution of endothermic/exothermic chemical reaction and pollutant concentration on the nanoliquid stream via cylinder/plate in the presence of permeable media is explored in the present study. The advancement of efficient waste disposal and pollution prevention techniques might result from studies on the fluid flow and dispersion of contaminants in cylinders and plates. Further, TiO2 nanoparticle offers improved thermal conductivity, helps in wide range of technological and industrial applications. The governing partial differential equations (PDEs) of the fluid problem are modeled and converted to ordinary differential equations (ODEs) utilizing similarity variables. The resultant ODEs are numerically solved using Runge Kutta Fehlberg’s fourth-fifth order (RKF-45) scheme. The influence of various non-dimensional parameters on the velocity, thermal, and concentration profiles are illustrated with a graphical representation. The comparison between cylinder and plate geometry is also displayed in graphs. The novel outcomes show that the augmentation of the chemical reaction parameter reduces the thermal profile of the endothermic case and elevates the thermal profile of the exothermic case. Elevating the local pollutant external source parameter leads to a rise in the concentration profile. It is around 10%–12% in Cf, 4%–6% in Nu and 8%–12% Sh observed in cylinder geometry than plate. The mass transfer rate reduces for improved values of solid fraction and activation energy. In all the modes, the cylinder geometry performs better than plate geometry.

Keywords

• Nanofluid
• Cylinder and plate
• Porous medium
• Endothermic/exothermic chemical reaction
• Pollutant concentration