Dynamics of nonuniform viscosity of unsteady CuO–H₂O nanofluid flow from a spinning body

Abstract

This paper studies an unsteady rotating flow over a sphere. The substantial effect of nonuniform viscosity is accounted in the extant study. CuO‐H2O nanofluid is used in adopted nanofluid model. A comparative study among the upshot of nonuniform viscosity and uniform viscosity on present nanofluid model is established here. Primary equations of adopted model have been standardized through similarity methodology and the subsequent equations have been resolved numerically by expending an RK‐4 shooting exercise. The stimulus of encouraging flow parameters on the flow specific is made accurately through diagrams and charts. We witnessed that the heat transmission rate is intensified for unsteadiness factor of the present flow, which suggests that the rate of cooling improves. The unsteadiness factor supports the flow to upsurge in xgoodbreakinfix−direction and the reverse consequence originates in the spinning direction. The heat transmission rate is higher in case of nonuniform viscosity than uniform viscosity.

Application of double diffusion theories to Maxwell nanofluid under the appliance of thermal radiation and gyrotactic microorganism

“…They observed the decline in velocity field for larger values of viscosity parameter and Weissenberg numbers. Giri et al (2019) numerically studied the upshot of thermal and momentum distribution for the flow of temperature-dependent viscosity modeling the absence of chemically reactive species. They mentioned that the unsteadiness parameter boosts the transport of heat.…”