Showing papers on "Second-order fluid published in 2021"

Insight into the dynamics of second grade hybrid radiative nanofluid flow within the boundary layer subject to Lorentz force.

Abstract: The magnetohydrodynamic hybrid second-grade nanofluid flow towards a stretching/shrinking sheet with thermal radiation is inspected in current work. Main concern of current investigation is to consider hybrid $$Al_{2} O_{3} - Cu$$ nanofluid which is perceived by hanging two dissimilar kinds of nanoparticles known as alumina and copper within the base fluid. The fluid motion is produced by non-linear stretching/shrinking sheet. The modeled equations which comprise of energy, motion and continuity equations are changed into dimensionless form using group of similar variables. To determine the solution of transformed problem, the Homotopy Analysis technique is used. The findings of this work revealed that the magnetic parameter improves the heat transfer rate. This work also ensures that there are non-unique solutions of modeled problem for shrinking case and a unique solution for stretching case. Higher values of $${\text{Re}}_{x}$$ results in declining of flow field. Rise in $$M$$ agrees to a decline in velocity distributions. Higher values of second order fluid parameter reduces the viscosity of fluid and accordingly velocity increases. Velocity profile is also a decreasing function of volume friction.

Thermal analysis of oblique stagnation point flow with slippage on second-order fluid

Abstract: It is well-established fact that thermal resistance models are highly effective passive devices to transfer large quantities of heat for predicting the thermal performance. In the present investigation, we analyzed the thermal analysis of an unsteady oblique stagnation point flow of an incompressible second-grade fluid on a stretching surface with some slip effects. The governing equations of the model under consideration are presented. The governing PDEs are altered into nonlinear ODEs by utilizing non-similar and similar variables and then solved numerically. The analysis further reveals that these solutions sustain in a definite domain of corresponding parameters. Moreover, the variations in temperature and velocity are presented in graphical form to show the influence of controlling parameters. The numerical details of the heat transfer rate for the several thermophysical parameters and skin friction are illustrated in tabular form. The increment in the local second-grade parameter causes the Sherwood number to decrease. The value of the Nusselt number enhances if we decrease the value of the local second-grade parameter.