Multi-scale thermal modeling of mixed-lubrication interfaces

Heat transfer in mixed-lubricated sliding contacts is an inherently multiscale process because the bulk (macroscopic body) temperatures are governed by the frictional heat generation at the microscopic asperity tips. Predicting the temperature field in the interface and on the bulk bodies requires one to take into account the tribological, thermo-physical, and mechanical properties of the tribosystem. This project employs a new, ultra-fast particle augmented mixed lubrication modeling approach that enables full scale temperature prediction of the bounding solids and the lubricant with high fidelity. multi-scale thermal modeling
PFTL Research Assistant(s):   Gagan Srivastava
Method(s) Employed:   Conductive Heat Transfer, Convective Heat Tranfer, Flash Heat Generation, Mixed Lubrication Modeling
Rig(s) and/or Software(s) Employed:   MATLAB, Mathematica, Paraview, QtiPlot

Sample Results:

iamge 1

image 2


Select PFTL References:

Srivastava, G., and Higgs III, C. F., "The Thermal Effects of CMP as a Particle Augmented Mixed Lubrication Tribosystem", Materials Research Society Symposium Proceedings, 2013