Stručni rad
https://doi.org/10.31534/engmod.2023.2.ri.04a
Surface Roughness Effect in Hydrodynamic Thrust Bearing with Ultra Low Clearance
Chao Wang
; College of Mechanical Engineering, Changzhou University, Changzhou, Jiangsu Province, CHINA
Yongbin Zhang
; College of Mechanical Engineering, Changzhou University, Changzhou, Jiangsu Province, CHINA
Sažetak
In the hydrodynamic thrust bearing with ultra-low clearance, even the nanoscale surface roughness is comparable to the bearing clearance, and its effect can be very significant. In this paper, the calculations are made for the performance of this bearing when the surface roughness is on the 1nm scale. It was found that the surface roughness effect in the bearing is strongly dependent on the physical adsorption of the fluid to the bearing surface determined by the interaction strength (or potential) between the fluid molecules and the molecules of the bearing surface; it can considerably enhance the load-carrying capacity of the bearing for the strong interaction between the fluid and the bearing surfaces.
Ključne riječi
bearing; boundary layer; hydrodynamics; multiscale; surface roughness
Hrčak ID:
309811
URI
Datum izdavanja:
21.7.2023.
Posjeta: 665 *