Wall slip and hydrodynamics of two-dimensional journal bearing

Effect of large-area texture/slip surface on journal bearing considering cavitation

“…The superscripts ϩ and -represent the phase change from vapor phase to liquid phase (condensation) and the phase change from liquid phase to vapor phase (vaporization), respectively. The so-called slip length boundary condition (Navier boundary condition) and the limiting shear stress boundary condition are usually used to describe a wall slip (Spikes, 2003a(Spikes, , 2003bSalant and Fortier, 2004;Ma et al, 2007;Rao, 2010;Rao et al, 2012;Fatu et al, 2011;Lin et al, 2012). The slip length boundary condition states that the slip velocity is proportional to the surface shear rate and slip length, seeing 5.…”

“…Lin et al (2012) pointed out that the location of slip region would significantly affect bearing performances and well-designed slip surface could improve the load-carrying capacity. Ma et al (2007) studied the influence of wall slip on the hydrodynamic lubrication performance of a finite length journal bearing by using a multi-linearity finite element algorithm and a quadratic programming technique, and found that slip surface could distinctly improve load support. Rao (2010) and Rao et al (2012) presented a one-dimensional analysis of partially textured slip slider and journal bearing based on a modified Reynolds equation and partially textured slip followed by 1-8 texture cells was considered on the stationary surface.…”

Study and Advance on High Speed Machine Tool Sleeve Bearing with Low Viscosity Lubrication

“…Choo et al [7] proved that Newtonian liquids can slip against solid surfaces that were smooth and lyophobic, and presented that liquid slip can be used to reduce friction in full film. Ma et al [8] pointed that wall slip can decrease the hydrodynamic response of fluid dramatically. Kalin et al [9] showed the influence of solid-liquid interactions on the coefficient of friction in the elastohydrodynamic lubrication regime.…”

Research on wireless nondestructive monitoring method for film pressure of water-lubricated bearing

“…However, due to the restriction of many factors, such as the sealing of film space, the structures of bearing, the formation mechanism of film and so on, the actual monitoring on film pressure is too difficult to be achieved. Therefore, most of the studies on film pressure of water-lubricated bearing are numerical calculation or simulation (Majumdar et al, 2004;Ma et al, 2007;Tanamal, 2007;Hua, 2009;Liang, 2009;Lu, 2010;Wang et al, 2011;Liu, 2012;Santos et al, 2012;Liu et al, 2013;Gao et al, 2014), and the experimental studies are relatively few. Unfortunately, because of the physical and mathematical approximations in numerical calculation and simulation, the calculated film pressure and other important parameters, such as film thickness, film stiffness, film damping and so on, can not reflect the actual bearing properties.…”