Analytical investigation for hybrid nanofluid flow near the stagnation point over a stretching sheet via modified adomian decomposition method

In recent decades, developing energy transfer mechanisms has piqued the curiosity of scientists and researchers. Basic fluids such as motor oils, ethylene glycol, and other conventional fluids play an important role in many industries. On the other hand, these fluids have low thermal conductivity, which causes difficulties for some industries. Therefore, scientists were interested in developing nanofluids to produce fluids with high thermal conductivity. In this research, the flow and heat transfer of a hybrid fluid through a surface that expands and contracts under the magnetic effect and radiation field was studied. The fluid contains hybrid nanoparticles, which are copper and aluminum oxide with ethylene glycol (40%)+water (60%). An appropriate symmetric transformation was used to reduce the partial differential equation (PDEs) governing speed, angular velocity, and temperature into a system of ordinary differential equations (ODEs). A solution to ODEs was obtained using the modified Adomian decomposition method. The results showed that the presence of hybrid nanoparticles with other factors has an important role in more effective heat transfer, and the presence of a stagnation point led to adverse results with some parameters.