Analyzing heat and mass transport phenomena using the Casson-nanofluid model in the context of Vacuum Pump Oil (VPO) and Cattaneo-Christov heat flux applications

Abstract

The researchers have shown significant interest in nanofluids due to their superior heat rate transport and enhanced thermal efficiency when compared to general fluids. The useful applications of nanofluids are electronic cooling, automotive engines, machinery, industrial equipment, lubrication processes, solar energy applications, targeted drug delivery, electronics cooling, solar collectors, automotive engines, etc. Therefore, this study focuses on examining the enhanced heat and mass transmission due to the nanofluid model along the curved stretched surface. For the nanofluid formation, the Fe3O4 nanoparticles are incorporated into the vacuum pump oil (VPO). The flow of nanofluid is typically characterized by the combined effects of magnetic influence and chemical reactivity. Further, the relevance of the heat source/sink, Brownian and thermophoretic diffusivity, and the Cattaneo-Christov heat flux are considered in the present analysis. The problem is expressed using PDEs, and these PDEs are renovated into nonlinear ODEs through the application of similarity transformations. An analytical procedure known as the HAM technique is used for the simulation of the resulting higher-order ODEs of the formulated problem. Furthermore, the validity of the present model's accuracy is confirmed through a comparison with the published findings. Some significant outcomes of the present problem are that the heat transference is larger for the curvature factor and thermal relaxation time factor. Nanoliquid velocity is lesser for the greater magnetic factor due to the Lorentz force mechanism. Further, it is examined that the nanoliquid solutal profile is lesser for the higher chemical reaction factor. Detailed discussions on numerous engineering and industrial applications are also extensively covered.