Legendre wavelet collocation method to simulate the effect of linear and exponential heat source/sink on AA7072-AA7075/EG-H2O flow over a stretching sheet with Cattaneo-Christov model

Abstract

This research presents a semi-analytical method for investigating the heat transfer of a hybrid nanofluid over an inclined porous stretched sheet under the influence of a magnetic field, non-linear radiation, linear and exponential heat source/sink with convective heating, and slip condition. For assessing the thermal propagation time, the Cattaneo-Christov model is used. The Legendre wavelet collocation technique (LWCT) was used, which employs an operational matrix of integration (OMI) and is capable of producing more accurate findings than other approaches. The hybrid nanofluid is made up of nanoparticles AA7072 and AA7075, as well as ethylene glycol and water (50%-50%) as the base fluid. The heat transfer enhancement is determined to be 19.46% when the volume fraction is increased from 2% to 10%. It is also clear that the thermal relaxation parameter reduces the thermal profile, whereas linear and exponential heat sources improve it. It is also noted that the velocity profile for the horizontal sheet decreases with volume fraction but increases for the vertical sheet.