A Spectral Relaxation Approach for Diffusion Thermo Effect on Tangent Hyperbolic Fluid Past a Stretching Surface in the Presence of Chemical Reaction and Convective Boundary Condition

In this study, a numerical investigation has been carried out to discuss the steady, two-dimensional flow of heat and mass transfer of tangent hyperbolic fluid with diffusion thermo in the presence of chemical reaction and convective surface boundary condition. The flow is induced by a stretching surface. The anticipated technique is an efficient numerical algorithm with assured convergence that serves as an alternative to general numerical methods for solving nonlinear boundary value problems. We demonstrate that the convergence rate of the spectral relaxation method is significantly improved by using the method in conjunction with the successive overrelaxation method. Validation of the results was achieved by comparison with limiting cases from previous studies in the literature. The results are presented graphically and discussed for various resulting parameters. Wessenberg number increases the thickness of the fluid, so velocity profiles decrease with an increase in We. Diffusion thermo effect significantly increases the thermal boundary layer thickness. Both local Nusselt numbers and local Sherwood numbers give the same behavior for the Weissenberg number.