Influence of physical-property models on thermal elastohydrodynamic lubrication solutions

This study numerically obtains the thermal elastohydrodynamic lubrication (TEHL) solutions of different physical-property models five lubricants and properties solids. The solution was computed at nominal line contact for both Newtonian non-Newtonian fluids. density, viscosity, specific heat, conductivity were considered functions temperature pressure, whereas expansivity a function pressure. lubricant polyalphaolefin, polyglycol, three mineral oils with viscosity grades solid materials set to two values. operating parameters represented by slide-to-roll ratio, load, speed. numerical maximum film friction coefficient. When physical rheological individually, either over- or underestimated. formula model applicable calculation. changed, fluids less affected than fluids, solids low somewhat them those high conductivity. oil grade sensitive parameter changes. Overall, qualitative behaviors all types almost identical in properties.