The bearing chamber of an aeroengine houses roller bearings and other structural parts. spatial limitation, high operational speeds the HP shaft proximity to combustion can make operating conditions challenging. A consists inner race, outer race a cage constraining number rolling elements. In application, oil is introduced into via regions elements interstices. This provides lubrication for bearings. source heat in mainly from contact friction temperature combustion. Cooling results...

In aero-engines, the shafts are supported on bearings that carry radial and axial loads. A ball bearing is made up of an inner race, outer a cage, which contains balls, these together comprise elements. The require oil for lubrication cooling. design studied in this work such fed to through holes/slots race. At each feed location, number equispaced feedholes/slots but there different holes at location. Once has passed bearing, it sheds outward from both sides into compartments known as...

ABSTRACT In this paper, a droplet to film interaction model technique is presented. the proposed approach, liquid and gas continua are modelled using an enhanced Volume-of-Fluid (VoF) while droplets tracked Lagrangian framework coupled Eulerian phases source terms. The eventual target application aeroengine bearing chamber in which oil found as droplets, shed from bearings, splashing on impact, separated wall surfaces at obstacles or simply re-entrained, continuum coating outer walls it also...

In this paper, we present results for the application of an Eulerian-Lagrangian technique to transient simulation oil film formation on walls aeroengine bearing chamber. The flow in chamber consists high speed droplets interacting with structures and flowing film. situation is highly rotational consisting sheared air over oil. may also be located vicinity combustion provides lubrication cooling hot structures. Modelling therefore complex. Volume Fluid (VoF) offers a potential platform model...

An aero-engine bearing chamber is a structure that used to contain and collect oil in lubricating cooling the bearings supporting high-speed engine shafts. There are various an aero-engine. Within chambers, there typically bearings, rotating shafts, seals gears (in some designs). The walls of stationary vents sumps take out oil, via offtake pipe, sealing air. collected sump recycled again loop. To prevent degradation reduce chance coking chamber, it desired all goes through recycling loop,...

Nowadays, the teaching and training of Finite Element Method (FEM) in universities are fundamental to analyze design electromagnetic devices. Traditionally, FEM focus description demonstration Two Dimensional (2D-FEM) examples applications. On other hand, Three (3D-FEM) models, particularly magnetostatic simulations, barely introduced undergraduate graduate courses. In this paper, a didactic set 3D-FEM simulations is developed by using free software called ONELAB. This composed three linear...

In aeroengines the shafts are supported on bearings that carry radial and axial loads. A ball bearing is made up of an inner-race, outer-race a cage which contains balls, these together comprise elements. The require oil for lubrication cooling. design studied in this work such fed to through holes/slots inner race. At each feed location number equispaced feedholes/slots but there different holes at location. Once has passed it sheds outwards from both sides into compartments known as...

Detonation, a combustion phenomenon is supersonic wave which plays critical role in the theory and application of combustion. This work presents numerical investigation into indirect initiation detonation using direct simulations (DNS). The Adaptive Mesh Refinement object–oriented C++ (AMROC) tool for parallel computations applied DNS. reactions take place shock tube an enclosure with respectively are controlled by detailed chemical kinetics. database produced DNS accurately simulates...