Analysis of thermally stratified micropolar Carreau–Yasuda hybrid nanofluid flow with Cattaneo–Christov heat and mass flux

Iron oxide Fe ₃O ₄ and magnesium oxide MgO are important biological agents that have an essential role in medical processes. The deficiency of these biological agents in the human body causes severe diseases like chronic anemia, heartburn, acid indigestion, sour stomach, etc. The existing article is concerned with the study of the mixed convection flow of micropolar Carreau–Yasuda hybrid nanoliquid at a stagnation point past a convectively heated Riga plate. The thermal and mass transport features are enhanced by applying the theory of Cattaneo–Christov thermal and mass flux. For the treatment of the above-mentioned diseases, the blood is considered a base fluid and magnesium oxide MgO and iron oxide Fe ₃O ₄ are injected into the blood as nanoparticles. The thermal radiation, chemical reaction, Brownian, and thermal diffusivity influences are taken into account. Further, thermal and solutal stratification effects are implemented on the current flow problem. A higher-order PDE is utilized for the formulation of the existing model. Applicable similarity variables are utilized for the conversion of these nonlinear PDE’s into nonlinear ODE’s. With the aid of the homotopy analysis method (HAM), the simulation of these ensuing higher-order ODEs is carried out for the analytical outcomes of the existing hybrid nanoliquid model. The fluctuation in different flow profiles is computed under different flow parameters. Drag forces and rate of thermal and mass transport with respect to various pertinent parameters are deliberated in the form of tables. The key result of the existing study is that the temperature rises due to enhancing the estimations of the radiation parameter and nanoparticle’s volume fraction. The hybrid nanoliquid’s velocity enhances with the enhancement of the Weissenberg number. The hybrid nanofluid velocity declined because of the amplification of the nanoparticle’s volume fraction. The hybrid nanoliquid temperature is enhanced for a thermal stratification parameter. The hybrid nanoliquid's concentration diminishes against the enhancing estimations of chemical reaction factor.