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Lubricants 2015, 3(2), 256-280;

Thermo-Hydrodynamic Analysis of a Plain Journal Bearing on the Basis of a New Mass Conserving Cavitation Algorithm

Precision and Microsystems Engineering, Delft University of Technology, Mekelweg 2, 2600 AA Delft, The Netherlands
Research and Development, Mitsubishi Turbocharger and Engine Europe, Damsluisweg 2, 1303 AC Almere, The Netherlands
Author to whom correspondence should be addressed.
Academic Editors: Romeo P. Glovnea and Michel Fillon
Received: 6 January 2015 / Revised: 25 March 2015 / Accepted: 30 March 2015 / Published: 13 April 2015
(This article belongs to the Special Issue Friction and Lubrication of Bearings)
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Accurate prediction of cavitation is an important feature in hydrodynamic bearing modeling. Especially for thermo-hydrodynamic modeling, it is crucial to use a mass-conservative cavitation algorithm. This paper introduces a new mass-conserving Reynolds cavitation algorithm, which provides fast convergence and easy implementation in finite element models. The proposed algorithm is based on a variable transformation for both the pressure and mass fraction, which is presented in the form of a complementary condition. Stabilization in the streamline and crosswind direction is provided by artificial diffusion. The model is completed by including a simple and efficient thermal model and is validated using the numerical values of a reference plain journal bearing experiment under steady-state conditions. In addition, a transient analysis is performed of a journal bearing subjected to a harmonic load. It is shown that the proposed cavitation algorithm results are in good agreement with the reference measurement results. Moreover, the algorithm proves to be stable and requires only a small number of iterations to convergence in the Reynolds-based finite element model. View Full-Text
Keywords: cavitation; finite element; hydrodynamic bearing; mass-conserving; stabilization; THD cavitation; finite element; hydrodynamic bearing; mass-conserving; stabilization; THD

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Alakhramsing, S.; van Ostayen, R.; Eling, R. Thermo-Hydrodynamic Analysis of a Plain Journal Bearing on the Basis of a New Mass Conserving Cavitation Algorithm. Lubricants 2015, 3, 256-280.

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