Investigation of inherent irreversibility and wall friction using non-Fourier model in converging/diverging flow of Power-law fluid

The comparative analysis of heat and mass transfer of power-law fluid past convergent conduit with the perspective of modified and conventional Fourier’s law is revisited in this paper. To consolidate the mathematical modelling for the physical flow problem through wedge shaped channel the cylindrical coordinates are used. The governing equations are normalized and solved with an efficient built-in numerical code Bvp4c. The thermal distribution against various parameters depletes with thermal relaxation and can be adjusted as controlling toll to optimize the thermal performance of the system. Comparison to classical heat flux model the non-Fourier and Fick’s law has a better performance. The functioning of channel fluidic systems is improved by low values of the power-law index and the lubricated walls.