Significance of variable viscosity for time-dependent flow of hybrid nanofluids due to spinning surface

Abstract

This study focuses on the physical characteristics of H2O, a homogenous combination of silver (Ag) and copper oxide (CuO), with Brownian motion and thermophoresis effects on temperature distribution. Additionally, volumetric fraction and effects of motile micro-organism density are investigated when colloidal fluid is circulated due to a spinning sphere. The graphical and tabular representation of recently created measures of temperature, concentration, and velocity profiles are considered. With the rising values of unsteady parameter A, the velocity along the x-direction, temperature, and concentration goes down while uplifted in the y-direction. The higher inputs of rotational function λ having a growing impact on primary and secondary velocities and a decreasing effects on temperature distribution, distribution of Sherwood and Nusselt numbers is enhanced to increase the impression of the unsteady and rotational parameters as witnessed from sketches. A wide range of investigations of elastic and shear-thinning phenomena have been conducted. The range of the parameters is taken where the behavior of the said parameters is prominent like 0.5⩽A⩽2.0,1.0⩽K⩽4.0,1.0⩽λ⩽4.0,6.0⩽Pr⩽9.0,0.1⩽Rd⩽0.4,2.0⩽Sc⩽5.0,0.01⩽Nt⩽0.2 and 0.1⩽Nb⩽0.4.