Investigation of the Tribological Performance of Heterogeneous Slip/No-Slip Journal Bearing Considering Thermo-Hydrodynamic Effects

Tauviqirrahman, Mohammad; Afif, Mustanir; Paryanto, P.; Jamari, J.; Caesarendra, Wahyu

doi:10.3390/fluids6020048

Cited by 14 publications

(13 citation statements)

References 40 publications

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“…The so-called heterogeneous rough/smooth pattern introduced here is inspired by the construction of heterogeneous slip/no-slip surface. As reported by numerous researchers, for example [14,[19][20][21][22][23][24], the heterogeneous slip/no-slip configuration was proven to increase the load-carrying capacity and reduce the friction force significantly. It is believed that a configuration of rough/smooth regions will lead to enhanced journal bearing properties.…”

Section: Introductionmentioning

confidence: 76%

CFD Analysis of Journal Bearing with a Heterogeneous Rough/Smooth Surface

et al. 2021

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In the present study, a computational investigation into acoustic and tribological performances in journal bearings is presented. A heterogeneous pattern, in which a rough surface is engineered in certain regions and is absent in others, is employed to the bearing surface. The roughness is assumed to follow the sand-grain roughness model, while the bearing noise is solved based on broadband noise source theory. Three types of heterogeneous rough/smooth journal bearings exhibiting different placement and number of the rough zone are evaluated at different combinations of eccentricity ratio using the CFD method. Numerical results show that the heterogeneous rough/smooth bearings can supply lower noise and larger load-carrying capacity in comparison with conventional bearings. Moreover, the effect on the friction force is also discussed.

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Section: Introductionmentioning

confidence: 76%

CFD Analysis of Journal Bearing with a Heterogeneous Rough/Smooth Surface

et al. 2021

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“…This concept suggests that the slip condition appears when the fluid-solid shear stress τ surpasses a critical value τ cr . The governing factor for slip velocity is [11,44]:…”

Section: Slip Modelingmentioning

confidence: 99%

“…On the basis of the work of Zhang et al [12] and Cui et al [14], the slip/no-slip configuration carrying a rectangular shape is of special relevance in the current work. The slip is utilized partially on the convergent area to generate additional load support [11,12,14,20]. It has been demonstrated that such a pattern (i.e., a rectangular shape with a partial slip surface zone) provides superior tribological performance with higher hydrodynamic pressure in a more constrained cavitation region.…”

Section: Model Geometrymentioning

confidence: 99%

“…Another study on slip/no-slip areas showed that journal bearings work exceptionally well when the eccentricity ratio is low [10]. According to Tauviqirrahman et al [11], including heterogeneous slip/no-slip zones onto journal bearings can increase load-carrying capacity by more than 100% while lowering the maximum operating temperature by up to 25%. Moreover, to achieve the best benefit from the slip boundary, the position of the provided slip must be carefully considered.…”

Section: Introductionmentioning

confidence: 99%

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Performance Comparison of Newtonian and Non-Newtonian Fluid on a Heterogeneous Slip/No-Slip Journal Bearing System Based on CFD-FSI Method

Tauviqirrahman

Jamari

Susilowati

et al. 2022

Fluids

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It is a well-known fact that incorporating a slip boundary into the contact surfaces improves bearing performance significantly. Regrettably, no research into the effect of slip on the behavior of journal bearing systems operating with non-Newtonian lubricants has been conducted thus far. The main purpose of this work is to explore the performance comparison of Newtonian and non-Newtonian fluid on a heterogeneous slip/no-slip journal bearing system. The tribological and acoustic behavior of journal bearing is investigated in this study using a rigorous program that combines CFD (computational fluid dynamics) and two-way FSI (fluid–structure interaction) procedures to simulate Newtonian vs. non-Newtonian conditions with and without slip boundary. The numerical results indicate that irrespective of the lubricant type (i.e., Newtonian or non-Newtonian), an engineered heterogeneous slip/no-slip pattern leads to the improvement of the bearing performance (i.e., increased load-carrying capacity, reduced coefficient of friction, and decreased noise) compared to conventional journal bearing. Furthermore, the influence of the eccentricity ratio is discussed, which confirms that the slip beneficial effect becomes stronger as the eccentricity ratio decreases. It has also been noticed that the Newtonian lubricant is preferable for improving tribological performance, whereas non-Newtonian fluid is recommended for lowering bearing noise.

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“…Typically, cavitation occurs at the divergence clearance region in full circle bearings. Finger-shaped voids that cover most of the divergence clearance region can be observed [3]. Another specific case is textured thrust bearings (such as dimple-enhanced seal-like thrust bearings), in which cavitation occurs at the tail end of each dimple [4].…”

Section: Introductionmentioning

confidence: 99%

A Local Adaptive Mesh Refinement for JFO Cavitation Model on Cartesian Meshes

Geng

et al. 2021

Applied Sciences

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Nonuniform mesh is beneficial to reduce computational cost and improve the resolution of the interest area. In the paper, a cell-based adaptive mesh refinement (AMR) method was developed for bearing cavitation simulation. The bearing mesh can be optimized by local refinement and coarsening, allowing for a reasonable solution with special purpose. The AMR algorithm was constructed based on a quadtree data structure with a Z-order filling curve managing cells. The hybrids of interpolation schemes on hanging nodes were applied. A cell matching method was used to handle periodic boundary conditions. The difference schemes at the nonuniform mesh for the universal Reynolds equation were derived. Ausas’ cavitation algorithm was integrated into the AMR algorithm. The Richardson extrapolation method was employed as an a posteriori error estimation to guide the areas where they need to be refined. The cases of a journal bearing and a thrust bearing were studied. The results showed that the AMR method provided nearly the same accuracy results compared with the uniform mesh, while the number of mesh was reduced to 50–60% of the number of the uniform mesh. The computational efficiency was effectively improved. The AMR method is suggested to be a potential tool for bearing cavitation simulation.

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Investigation of the Tribological Performance of Heterogeneous Slip/No-Slip Journal Bearing Considering Thermo-Hydrodynamic Effects

Cited by 14 publications

References 40 publications

CFD Analysis of Journal Bearing with a Heterogeneous Rough/Smooth Surface

CFD Analysis of Journal Bearing with a Heterogeneous Rough/Smooth Surface

Performance Comparison of Newtonian and Non-Newtonian Fluid on a Heterogeneous Slip/No-Slip Journal Bearing System Based on CFD-FSI Method

A Local Adaptive Mesh Refinement for JFO Cavitation Model on Cartesian Meshes

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