Abstract
Nano-Particle additives are thoroughly investigated due to their promising attributes for lubrication improvement in the Intermediate Gearbox of the AH-64. This paper discusses the evaluation of the effective thermal conductivity and effective dynamic viscosity for nano-composite enhanced transmission Mobile AGL Oil. Experimental results using a unique transient method and viscometer showed significant thermal and rheological improvements of the Oil respectively due to the nano-particle additives. To capture the transport phenomena effectively, two new models based on the effective approach method [14] have been developed to describe non-spherical particles. These continuum models take into account the effects of particle size, particle shape, temperature, layering at the liquidsolid interface and thermo- hydrodynamic effects. The theoretical predictions from the effective thermal conductivity model and effective viscosity model agreed with the experimental data. In order to validate the versatility and goodness of the proposed models, different experimental data and models taken from literature are compared against model results from the current work and confirm that the presented model closely agrees.