Lubricated surface oblique stagnation point flow of second-grade fluid with heat and mass transfer phenomenon: applications to hydraulic systems

Abstract

The lubrication phenomenon with heat and mass transfer phenomenon justified applications in ploy engineering, polymer processes, compressor oils, piston oils, hydraulic systems, and paint industries. This contribution attributes the significance of heat and mass transfer due to the lubricated surface. The enhancement in the lubricated phenomenon is further suggested by incorporating the nonlinear radiative impact and chemical reaction. The viscoelastic fluid flow is confined in the zone of stagnation point of the lubricated surface. The axial and tangential velocities are presented for no-slip and full-slip cases. Moreover, a comparative analysis is carried out for temperature distribution over lubricated and non-lubricated surfaces for linear and nonlinear radiations. The problem is modeled in view of fundamental conservation laws, and the similarity variables are used to transfer them to the system of coupled nonlinear boundary value problem which is approximated by the Keller box method. The obtained results are validated with the existing literature as a particular case of the present study. It is noted that the local Nusselt number and Sherwood number are reduced by decreasing the efficiency of the lubricant also the nonlinear thermal radiation assists the heat transfer rate. The increase in chemical reaction declined the concentration phenomenon.