An Average Flow Model of the Reynolds Roughness Including a Mass-Flow Preserving Cavitation Model

Bayada, Guy; Martin, Sébastien; Vázquez, Carlos

doi:10.1115/1.2005307

Cited by 68 publications

(47 citation statements)

References 18 publications

(40 reference statements)

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“…[1][2][3][4][5][6][7]. In these works it was shown that the rapid oscillations (in the coefficients of the Reynolds type equation under consideration) induced by the surface roughness, could efficiently be averaged by the homogenization method employed.…”

Section: Introductionmentioning

confidence: 99%

Reiterated homogenization applied in hydrodynamic lubrication

Almqvist

Essel

Fabricius

et al. 2008

Proceedings of the Institution of Mechanical Engineers, Part J:

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This work is devoted to studying the combined effect that arises due to surface texture and surface roughness in hydrodynamic lubrication. An effective approach in tackling this problem is by using the theory of reiterated homogenization with three scales. In the numerical analysis of such problems, a very fine mesh is needed, suggesting some type of averaging. To this end, a general class of problems is studied that, e.g. includes the incompressible Reynolds problem in both artesian and cylindrical coordinate forms. To demonstrate the effectiveness of the method several numerical results are presented that clearly show the convergence of the deterministic solutions towards the homogenized solution. Moreover, the convergence of the friction force and the load carrying capacity of the lubricant film is also addressed in this paper. In conclusion, reiterated homogenization is a feasible mathematical tool that facilitates the analysis of this type of problem.

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Section: Introductionmentioning

confidence: 99%

Reiterated homogenization applied in hydrodynamic lubrication

Almqvist

Essel

Fabricius

et al. 2008

Proceedings of the Institution of Mechanical Engineers, Part J:

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“…(12) gives diesel engine crankshaft 4 stress results of main bearing in vertical direction and third direction. It is found that the curve peak is generally the pressure outbreak of diesel engine adjacent cylinders, the work load of the first main bearing is the minimum, while the second main bearing the maximum [9].…”

Section: Dynamics Analysis Of Spindle Bearingmentioning

confidence: 99%

Multi-Body Dynamics Analysis of V-Type Diesel Engine Crankshaft

Xu¹,

Xianbin²,

Yu³

et al. 2014

TOMEJ

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Based on the V-type diesel engine crankshaft system, the paper combined the finite element method (fem) and multi-body dynamics method together, made a virtual simulation analysis. First, by 3d software and finite element software to establish the multi-body dynamic models of the crankshaft, bearing and piston, then simulated the actual engine working condition, and got the data such as crankshaft acceleration, velocity and displacement by the multi-body dynamics simulation analysis. By calculation, the paper found that by using the combination of finite element and multibody simulation method, can we effectively simulate the diesel engine crankshaft dynamics characteristics.

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“…This method uses multiple scales. Originally proposed by Elrod [26], the method has been further studied by several authors [27][28][29][30]. The analysis is based on the description of simplified surface profiles, for example, of periodic patterns, thereby making it suitable for the study of textured surfaces.…”

Section: Introductionmentioning

confidence: 99%

Multiscale Analysis of the Roughness Effect on Lubricated Rough Contact

Demirci¹,

Mezghani

Yousfi

et al. 2013

Journal of Tribology

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is an open access repository that collects the work of Arts et Métiers ParisTech researchers and makes it freely available over the web where possible. Determining friction is as equally essential as determining the film thickness in the lubricated contact, and is an important research subject. Indeed, reduction of friction in the automotive industry is important for both the minimization of fuel consumption as well as the decrease in the emissions of greenhouse gases. However, the progress in friction reduction has been limited by the difficulty in understanding the mechanism of roughness effects on friction. It was observed that micro-surface geometry or roughness was one of the major factors that affected the friction coefficient. In the present study, a new methodology coupling the multiscale decomposition of the surface and the prediction of the friction coefficient by numerical simulation was developed to understand the influence of the scale of roughness in the friction coefficient. In particular, the real surface decomposed in different roughness scale by multiscale decomposition, based on ridgelets transform, was used as input into the model. This model predicts the effect of scale on mixed elastohydroynamic point contact. The results indicate a good influence of the fine scale of surface roughness on the friction coefficient for full-film lubrication as well as a beginning of improvement for mixed lubrication.

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An Average Flow Model of the Reynolds Roughness Including a Mass-Flow Preserving Cavitation Model

Cited by 68 publications

References 18 publications

Reiterated homogenization applied in hydrodynamic lubrication

Reiterated homogenization applied in hydrodynamic lubrication

Multi-Body Dynamics Analysis of V-Type Diesel Engine Crankshaft

Multiscale Analysis of the Roughness Effect on Lubricated Rough Contact

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