Team

Different liquid lubricants are utilized on sliding surfaces and rotating parts to reduce the unfavourable consequences of friction. Despite this, most researchers are moving to decrease the usage of lubricant fluids because of their undesirable influence on the environment. The wall slip and bulk shear studied in this research are two main factors contributing to friction in tribology systems. Polyalphaolefin (PAO) oils are saturated non-polar hydrocarbon oils and have interested in developing research considerations because of their specifics. This project employs a complex hydrocarbon oil to evaluate the importance of the lubricant's molecular branch chain length on the wall slip and bulk shear on the metal surfaces. The principal component of PAO base oil is a mixture of olefin dimers, trimers, and tetramer molecules. Besides, their homogenous structures are ideal for Molecular Dynamics (MD) simulation. In addition, additive polarity is described as the natural directional attraction of additive molecules to metal surfaces in contact with oil. Metal wetting is when additives stick to metal surfaces, such as iron and steel, used in this research. One of these lubricant additives is Viscosity index improvers, a high molecular mass lubricant additive that prevents the hydrocarbon oil from thinning out as the temperature increases. These additives are employed considerably when blending multi-grade engine oils. Slip Length Tribometer (SLT) is used to measure the slip length of polar and non-polar lubricants confined between metal surfaces in an industrial environment. Besides, the MD method is applied for studying tribology systems' behaviour to understand the physics of the fluid-solid system.