The object of this paper is to study the effects of lubricant film flow, pressurized and sheared between two parallel rough surfaces in sliding motion. The influence of microscopic surface roughness on lubricant film flow macroscopic behavior is described through five nondimensional parameters called flow factors. These macroscopic transport parameters are related to the local geometry of apert...

A previous work dealing with bound states in a Coulomb potential is extended to the case of scattering states. The symmetry of the problem under the Lorentz group 0(1,3) is used to construct wave functions. Harmonic analysis on two-sheeted hyperboloids is briefly discussed in arbitrary dimension. The set of scattering states for both an attractive and a repulsive potential is shown to provide a...

The products based on fossil oils are increasing with the concerns of environmental sectors and academics as well. In this era, there challenges to finding alternative resources replacing oil for different engineering applications. One is lubricant. Fossil lubricants have many industrial applications involve millions dollars each year in development due their huge needs. Accordingly satisfy nee...

Lubricant selection and cleaner chemistry is oftentimes one of the most overlooked parts of industrial metal processing. Their selection can affect not only the ability to adequately clean parts; it can also potentially affect the success of a waste minimization effort to recycle the cleaner. Certain lubricants are more compatible with certain cleaning processes than others. This paper will dis...