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The pressure for increased use of vegetable oils in lubricants, due to both environmental and health & safety considerations, is likely to continue. In addition, economic trends are likely to make vegetable oils increasingly more attractive than in the past in many areas of the globe. All these factors will probably result in an increase use of vegetable oil as lubricants. In this work, systematic...
A numerical procedure is developped in order to analyse the " Tridimensional Thermohydrodynamic " behaviour of a bearing under static loading. The Reynolds equation, the energy equation in the film and the heat transfert equation in the solids are simultaneously solved using a Newton-Raphson procedure and the finite element modelisation. The numerical procedure developped incorporates a...
The numerical modeling of non-Newtonian lubricant flows in titling pads thrust bearing is developed to predict some interesting factors in industrial view point. It means parameters such as load, friction and power loss whose evaluation contributes strongly to improve the design and performances of the titling pads thrust bearing. The non-Newtonian rheological model chosen is the power law because...
The ever-changing legislation and every increasing awareness of the environment have led to a change in the production processes used up to new and especially in the production auxiliaries such as coolants. It has been widely accepted that a considerable proportion of the process costs are caused by the application of metalworking fluids. In this aspect the costs for coolant concentrates themselves...
The present paper is a synthesis of the work performed by the authors on the problems characterising the high Reynolds number lubrication namely the turbulent flow regime and the presence of inertia effects. The paper introduces the first approach of the turbulent regime based on the mixing length concept and shows how the Reynolds equation was modified. The problem of distributed inertia forces is...
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