Analysis of interparticle spacing and nanoparticle radius on the radiative alumina based nanofluid flow subject to irregular heat source/sink over a spinning disk

Abstract

The analysis of the nanofluid flow across a spinning disc has great significance due to its wide range of applications, i.e. cancer treatments, nanoscience, chemotherapy, drug delivery, biosensors, food sciences, electronics and biomedicines. Based on the above applications, the nanofluid flow over a spinning disc is modeled. The magneto-hydrodynamic (MHD) nanofluid flow has been studied under the consequences of viscous dissipation, non-uniform heat source, and thermal radiation. The nanofluid is prepared by the dispersion of aluminum oxide (Al2O3) nanoparticles (nps) in the water. The effects of Al2O3 nps radius and inter-particle spacing (IPs) on the 2D flow of nanoliquid are also studied. The modeled equations are reset into non-dimensional form of ODEs using the similarity conversions. The numerical approach parametric continuation method “PCM” is used to tackle the reduced form of ODEs. The energy and velocities distributions are analyzed versus the discrete flow constraints and figured out for the large and IPs (h = 10 and h = 1/) and for large and small radii (Rp=5/2 and Rp=3/2) of Al2O3 nps. It has been noticed that the fluid velocity is amplified due to the rising effect of the suction factor for both large and small radii of Al2O3 nps. Moreover, it is observed that the energy conduction rate is higher when the nanoparticle volume fraction and Eckert number is rises for both cases (linear and nonlinear) of radiation.