Unsteady Stagnation Point Flow of Maxwell Nanofluid Over Stretching Disk with Joule Heating

In advanced technology, the cooling systems are noteworthy in thermal devices which have been accomplished both active and passive heat transfer improvement methods. Scientist and engineers have developed numerous techniques for the enhancement of heat transport in the thermal systems. The nanofluids, Joule heating, magnetic field and surface heating agents are the emerging effect for the enhancement of heat transfer which have been continuously studied. The main aim of this paper is to study the thermal and solutal aspects of the magnetohydrodynamics unsteady flow of Maxwell nanofluid under the consideration of stagnation point over radially stretching disk. The impact of resistive heating and heat generation to the transportation of thermal energy in fluid is analyzed. Moreover, the prescribed surface temperature (PST) and constant wall temperature (CWT) are considered here. Additionally, the convective energy transport at the surface of disk is assumed and phenomenon of mass transfer is explored with effect of chemical reaction. The partial differential equations which govern the flow, heat and mass transport phenomena are reduced to nonlinear differential equations (ODEs) by introducing the suitable similar transformations. Also, for the solutions of ODEs the built in MATLAB program namely bvp4c is employed and outcomes presented graphically with comprehensive discussion. As a key outcome, it is noted that the higher values of unsteadiness parameter enhance the temperature field in the case of CWT but declines in the case of PST. The increase in Eckert number boosts up the temperature distribution in the Maxwell fluid significantly. The numerical values of surface temperature and concentration gradient for varying values of different parameters are given in tabular form.