Overlapping grid SQLM for third-grade modified nanofluid flow deformed by porous stretchable/shrinkable Riga plate

Abstract The improvement in thermal performance of fluid and the control energy loss are equitably significant. Therefore, purpose this study is to analyze entropy generation, stagnation point flow, characteristics non-Newtonian third-grade modified hybrid nanofluid generated by a stretchable/shrinkable Riga plate porous medium with varying flow viscosity. In analysis, modification considered using pure water as base three various nanomaterials (aluminium oxide, copper, nickel) nanoparticles characterization heat transfer. Furthermore, contribution source/sink viscous dissipation accounted for model. suited transformations enforced remodel governing mathematical equations produce ordinary differential that conveniently tackled via spectral quasilinearization method (SQLM) along overlapping grid idea yield numerical solutions. preference approach over others has been justified through discussion error bound theorems, residual solution errors, computational time, conditioning matrices. physical significance disparate parameters on variables, velocity gradient, rate, generation scrutinized graphs tables. Crucial findings include temperature enhances quickly (better conductor) than single nanofluid, conventional higher Biot number, variable viscosity, source parameters. Mass suction quantities interest, but suppresses temperature. An increase Hartmann wall drag coefficient while lowering rate transfer, opposite true media. More system high suction, dissipation, Hartman Owing associated nanoparticles, technology recommended enhancing attributes minimal cost effects. engineering industrial view, can contribute significantly working fluid.