nowadays, due to the increasing power of diesel engines, especially heavy duty diesel engines, and increasing gas pressure inside the combustion chamber, the forces acting on the engine bearings have dramatically raised. on the other hand, becaus eof the competition in the market, it is necessary to increase the engine bearing life and reduce its failure as much as possible. the engine bearings...

Nowadays, due to the increasing power of diesel engines, especially heavy duty diesel engines, and increasing gas pressure inside the combustion chamber, the forces acting on the engine bearings have dramatically raised. On the other hand, becaus eof the competition in the market, it is necessary to increase the engine bearing life and reduce its failure as much as possible. The engine bearings...

In order to study the effect of surface roughness on lubrication performance an elastic support water-lubricated tilting pad thrust bearing, a mixed (ML) deterministic model is hereby presented based unified Reynolds equation model. This very incorporates elastic–plastic deformation asperities and polymer matrix pad, as well rubber support. The randomly distributed generated by mathematical sha...

This article presents a novel mixed-thermoelastohydrodynamic (TEHD) model for the lateral lubricating interfaces which exist between floating lateral bushings and gears in external gear machines (EGMs). The proposed model integrates the influence of surface asperities along with the fluid structure and thermal interaction in the interface, especially in the regions of very low film thicknesses ...

The increasingly high demands for compact design require journal bearings to work under severe operating conditions. A steadystate mixed-TEHD (thermo-elasto-hydrodynamic) model for journal bearings has been developed. The model considers the fluid flow in the gap formed by rough surfaces, asperity contact, surface thermoelastic deformations, and a temperature–pressure–viscosity relationship for...

In this paper, we propose a full discretization scheme for the instationary thermal-electro-hydrodynamic (TEHD) Boussinesq equations. These equations model dynamics of non-isothermal, dielectric fluid under influence dielectrophoretic (DEP) force. Our combines an H 1 -conformal finite element method spatial with backward differentiation formula (BDF) time stepping. The resulting allows decouple...

A mathematical model is developed to investigate the combined effect of fluid cavitation and inertia on pressure buildup parallel textured surfaces. The analyzed using Rayleigh–Plesset model, with an averaged method. finite element method Newton-downhill are employed solve governing equations. numerical validated by comparing experimental results, discussed. research indicates that weakens dist...

A thermoelastohydrodynamic (TEHD) coupling model is developed to study the static performance of a heavy-duty tilting pad thrust bearing (TPTB) under effect axis misalignment. To ensure validity in calculating thermoelastic deformation, calculation accuracy mechanical and thermal deformations used TEHD verified by finite element method (FEM). The influence on flow state prediction determined us...

Sanayi toplumunda siyasal, ekonomik, sosyal ve kültürel alanda kitle olan insanlar, bilgi toplumuna geçi?le birlikte ileti?im teknolojilerinin sundu?u hizmetlerle birer birey olarak konumland?r?lm??t?r. Bu bireyler teknolojiyle arac?l? bir ?ekilde sürdürdükleri ili?kiyle gündelik ya?amlar?nda sürekli dijital izler b?rakmakta veriler üretmektedirler. Kaydedilen bu her geçen gün büyük art?? göste...

in dynamic analysis of floating structures, the designer needs to know the wave forces due to incident and scattered waves on the structure. in this work, the flow field around the body is solved based on the potential theory with considering the free surface and sea bed effects. using this theory, the wave forces exerted on two typical sea buoys with spherical and disc-type bodies are determin...