Thermohydrodynamic analysis of high speed water-lubricated spiral groove thrust bearing considering effects of cavitation, inertia and turbulence

Lin, Xin; Jiang, Shuyun; Zhang, Chibin; Liu, Xiang

doi:10.1016/j.triboint.2017.11.037

Cited by 88 publications

(33 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Several studies reported that the inertia significantly affects bearing performance both theoretically [1][2][3][4][5][6][7] and numerically [8][9][10]. Based on analytical approach, Safar and Shawki [1] investigated the effect of inertia force on the turbulent bearing characteristics.…”

Section: Introductionmentioning

confidence: 99%

“…As widely known, when the texturing is of specific interest, the presence of cavitation can reduce or increase the lubrication performance based on the texturing parameters. In terms of inertia and cavitation, in the recent publication, Lin et al [7] discussed the complete analysis of the thermohydrodynamic cavitating flow lubrication model including effects of cavitation, inertia, and turbulence. The results indicated that inertia and cavitation reduce the load-carrying capacity and friction torque, while load-carrying capacity and friction torque increase due to turbulence.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of inertia on the cavitation phenomena of hydrodynamic textured bearings considering slip

Jamari

Muchammad

Hilmy

et al. 2019

J Braz. Soc. Mech. Sci. Eng.

View full text Add to dashboard Cite

Surface modification of a lubricated bearing, such as hydrophobic coating inducing slip situation and texturing, is proved to enhance hydrodynamic performance. As widely known, in textured surface lubricant inertia and cavitation can significantly affect the hydrodynamic pressure profile. However, a brief literature review indicates that studies related to the correlation between cavitation and inertia, especially in the presence of slip, are considerably limited. The present study examines the effect of inertia on cavitation phenomena by considering the slip boundary using two approaches, namely computational fluid dynamics based on full Navier-Stokes equations and analytical lubrication equation based on the Reynolds equation. The modified Reynolds equation with slip concept is used with respect to the slip effect applied on the surface of the bearing. The results indicate that the inertia as well as the slip condition significantly affects the cavitation area. It is also highlighted that the cavitation area reduces by increasing the inertia effect, and it becomes smaller when the slip is introduced.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of inertia on the cavitation phenomena of hydrodynamic textured bearings considering slip

Jamari

Muchammad

Hilmy

et al. 2019

J Braz. Soc. Mech. Sci. Eng.

View full text Add to dashboard Cite

show abstract

“…The diameters of the disc tool and centre hole are 50 and 3 mm, respectively. A novel disc polishing tool with a spiral groove was designed based on the hydrodynamic theory of the spiral groove bearing [ 14 ]. Twelve spiral grooves were engraved on the disc, and the spiral angle of the groove was 45°.…”

Section: Disc Hydrodynamic Polishing (Dhdp)mentioning

confidence: 99%

Novel Disc Hydrodynamic Polishing Process and Tool for High-Efficiency Polishing of Ultra-Smooth Surfaces

et al. 2018

View full text Add to dashboard Cite

Nowadays, large aspheric surfaces, including non-rotationally symmetric surfaces, are increasingly used in ground- and space-based astronomical instruments. The fabrication of these surfaces with sub-micrometric form accuracy and nanometric surface finish, especially for hard and difficult-to-machine materials, has always been a challenge to the optics industry. To produce ultra-smooth surfaces efficiently without subsurface damage and surface scratches, a novel disc hydrodynamic polishing (DHDP) process is proposed through the combination of elastic emission machining and fluid jet polishing. Firstly, the polishing tool for DHDP was carefully designed and the feasibility of the proposed method was experimentally verified. The liquid film was found to act as a carrier of abrasive grains between the polishing tool and the polished surface. Next, computational fluid dynamics (CFD) was used to study the effects of process parameters on the slurry film flow in DHDP. Finally, preliminary experiments were conducted to verify the CFD simulations. The experimental data reasonably agree with the simulation results, which show that increasing rotational speed has no influence on the film thickness for the polishing tool without grooves, but leads to increased film thickness for the polishing tool with grooves. Moreover, DHDP can efficiently reduce the surface roughness and acquire ultra-smooth surfaces without subsurface damage and scratches.

show abstract

“…Yu Chen et al 30 conducted a numerical investigation by implementing user‐defined computational fluid dynamics code on hydrodynamic journal bearing to study the influence of thermal and cavitation phenomenon and reported that for extreme operating condition groove shape is ideal. Lin et al 31,32 conducted a theoretical investigation on high speed water lubricated groove to study the influence of thermal and cavitation phenomenon and reported that cavity and inertia have significant effects on journal bearing. Alireza Solghar 33 conducted a numerical investigation on user‐defined computational fluid dynamics code on hydrodynamic journal bearing by implementing the lattice Boltzmann method to study the bearing performance characteristics and reported that ellipticity ratio has profound effects on the bearing load capacity, oil flow rate, and bearing power loss.…”

Section: Introductionmentioning

confidence: 99%

Influence of thermal pressure and temperature profile approximations in thermohydrodynamic analysis of surface‐textured noncircular journal bearing

2020

View full text Add to dashboard Cite

The present study aims to study the thermohydrodynamic performance of noncircular journal bearings lubricated with multigrade oil. Experimental investigations are carried out on phosphorous bronze hydrodynamic journal bearing with a surface textured at different loading conditions with multigrade oil (MAK 2T oil) as lubricant at different constant rotational speeds (i.e., 1000–4000 rpm) for studying the dynamic characteristics. The journal‐bearing's thermodynamic behavior is analyzed by simplifying modified Reynolds and energy equations to obtain surface‐textured bearing performance characteristics, such as load‐carrying capacity, mass flow rate, and power loss. The noncircular bearings suggest several design parameters, such as a tilt angle for designers. By considering thermal effects for MAK 2T oil lubricant, the requirements of a specific application can be fulfilled.

show abstract

Thermohydrodynamic analysis of high speed water-lubricated spiral groove thrust bearing considering effects of cavitation, inertia and turbulence

Cited by 88 publications

References 20 publications

Effect of inertia on the cavitation phenomena of hydrodynamic textured bearings considering slip

Effect of inertia on the cavitation phenomena of hydrodynamic textured bearings considering slip

Novel Disc Hydrodynamic Polishing Process and Tool for High-Efficiency Polishing of Ultra-Smooth Surfaces

Influence of thermal pressure and temperature profile approximations in thermohydrodynamic analysis of surface‐textured noncircular journal bearing

Contact Info

Product

Resources

About