Modified Rayleigh' s criteria for thin γ- ALOOH/H_2O nano-film generated due to rotating heated cone

摘要

The current work describes the gamma-ALOOH/H2O nanofluid flow characteristics near a thin film generated due to outer surface of heated rotating cone. The cone is completely immersed in a nanofluid and turned upside down due to rotation, which creates a thin region. Due to rotation, gamma-ALOOH/H2O nanofluid produces a centrifugal force, while strong surface tension sustains the centrifugal force at the external surface of the fluid film flow. Therefore, the fluid does not diffuse but moves upward along the cone. gamma-ALOOH, H2O, heated cone and rotating phenomena causes energy generation in the system. The boundary layer theory and fast rotation are implemented to drive the equations of tangential, radial and meridional velocities and temperature profiles for nanoparticles. The two dissimilar branches with a turning point is calculated between film thickness in the centrifugal and Coriolis zones. Modified Rayleigh's criterion is applied to calculate the new outcomes. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.