Heat and mass transfer flow of nano-fluid over a stretching sheet with chemical reactions

摘要

Convective heat and mass transfer using nano-fluid proved its significance in heating and cooling systems for the past 2 decades. Presently, flow of a nano-fluid is considered over an inclined stretching sheet under the free convection with chemical reactions. As the particle size during the flow is not constant due to reaction with solvent and other factors, Graham and Choi models are considered for viscosity and thermal conductivity. The thermal radiation and constant heat source are considered. The change in the particle size certainly affects the viscosities and thermal conductivities of the nano-fluid. The chemically reacting effect rate parameter is included in the expression of viscosity which addresses the behavior of the viscosity of the Nano-fluid. The Cu water nano-fluid is considered due to the high thermal conductivity and of industrial importance. With the increase of the diameter of the particle, the nano-sized particles are very dynamic in nature when it compared with micro sized particles.