Heat transfer optimization of hybrid nanomaterial using modified Buongiorno model: A sensitivity analysis

Sensitivity analysis of the heat transfer rate in the flow of the hybrid nanoliquid C2H6O2 - H2O (base liquid) + MoS2 - Ag(nanoparticles) over a wedge using the Response Surface Methodology (RSM) is carried out. The nanomaterial is modeled using the modified Buongiorno nanofluid model (MBNM) that considers the major slip mechanisms and the effective properties of the hybrid nanoliquid. Two distinct heat sources-linear thermal heat source and an exponential space-dependent heat source are taken into account. The governing nonlinear two-point boundary-layer flow problem is treated numerically. The effects of pertinent parameters on the flow fields in the boundary layer region are represented graphically with suitable physical interpretations. The exponential heat source and slip mechanisms are used to study the sensitivities of the heat transfer rate. Both heat source mechanisms lead to an improvement in the temperature profile, in which the effect of the exponential space-related heat source is predominant. The Brownian motion parameter was found to be the most sensitive to the heat transfer rate. (C) 2021 Elsevier Ltd. All rights reserved.

Automated summary

This study conducted a sensitivity analysis of heat transfer rate in hybrid nanoliquid flow over a wedge using Response Surface Methodology (RSM), considering different heat sources and sensitivities. The effects of exponential heat source and slip mechanisms on heat transfer rate were found significant, with Brownian motion parameter being the most sensitive to it.