Thermal radiation and Cattaneo–Christov heat flux effect on heat transfer inside a porous square enclosure by using LTNE model
P. Sreedevi, P. Sudarsana Reddy, Ali J. Chamkha
Abstract
Purpose This article presents a numerical study of the heat transfer properties of a nanofluid created using engine oil as the common fluid and Fe3O4 nanoparticles within a square cavity embedded with porous media using the LTNE model in the presence of a Cattaneo–Christov heat flux. To obtain the governing boundary layer equations, the Boussinesq approximation and Darcy model are employed. Design/methodology/approach By applying the Finite Element method, the modeling equations for dimensionless vorticity, stream function and temperature contours with conforming boundary and initial conditions are scrutinized. Findings One important finding is that streamlines create a core vortex that is oriented centrally and has longer thermal relaxation times. In contrast, solid state isotherms are hardly affected by growth in thermal relaxation parameter values when compared to fluid state isotherms. Originality/value The research work carried out in this work is original and no part is copied from others.