Budi Chandra's Outputs (30)

Computational study of a customised shallow-sump aero-engine bearing chamber with inserts to improve oil residence volume (2017)
Presentation / Conference Contribution

An aero-engine bearing chamber is a structure that is used to contain and collect oil used in lubricating and cooling the bearings supporting the high-speed engine shafts. There are various bearings in an aero-engine. Within the bearing chambers, the... Read More about Computational study of a customised shallow-sump aero-engine bearing chamber with inserts to improve oil residence volume.

Innovative shallow sump customizations for aero-engine bearing chambers (2016)
Presentation / Conference Contribution

Aero-engines incorporate various bearing chambers and these typically contain bearings, seals, rotating shafts, stationary walls and struts, and sometimes gears. Oil is supplied for lubrication and cooling and is removed (scavenged) from the sump reg... Read More about Innovative shallow sump customizations for aero-engine bearing chambers.

Experimental investigation into the performance of shallow aeroengine off-takes (2014)
Presentation / Conference Contribution

Copyright © 2014 by Rolls-Royce plc. Oil removal (scavenge) from aeroengine bearing chambers is an ongoing challenge for aeroengine designers. Effective scavenging of oil is necessary to avoid excessive heat generation, degradation of oil properties... Read More about Experimental investigation into the performance of shallow aeroengine off-takes.

Transient two-phase effects in an Aeroengine bearing chamber scavenge test rig (2014)
Presentation / Conference Contribution

Copyright © 2014 by ASME. Aeroengine bearing chambers typically contain bearings, seals, shafts and static parts. Oil is introduced for lubrication and cooling and this creates a two phase flow environment that may contain droplets, mist, film, ligam... Read More about Transient two-phase effects in an Aeroengine bearing chamber scavenge test rig.

Study of gas/liquid behavior within an aeroengine bearing chamber (2013)
Journal Article

Aeroengine bearing chambers typically contain bearings, seals, shafts and static parts. Oil is introduced for lubrication and cooling and this creates a two phase flow environment that may contain droplets, mist, film, ligaments, froth or foam and li... Read More about Study of gas/liquid behavior within an aeroengine bearing chamber.

Scavenge flow in a bearing chamber with tangential sump off-take (2013)
Journal Article

A tangential sump design is employed in several aero-engines mainly due to its simplicity and compactness. However various problems have prompted investigations of the sump design. An experimental program at Purdue University (Chandra, 2006, "Flows i... Read More about Scavenge flow in a bearing chamber with tangential sump off-take.

Performance comparison for aeroengine-type sump geometries (2013)
Presentation / Conference Contribution

Oil removal from aeroengine bearing chambers presents a challenge for aeroengine designers. Effective scavenging of oil is necessary to avoid excessive heat in the bearing chamber as this may lead to degradation of oil properties and deterioration in... Read More about Performance comparison for aeroengine-type sump geometries.

Liquid and gas flow behaviour in highly rotating environment (2011)
Presentation / Conference Contribution

In a typical aero engine bearing chamber, oil is introduced to lubricate and cool the bearings as well as the bearing chamber wall. The flow of the oil in the bearing chamber is very complex due to the presence of various forces: gravity, windage, ca... Read More about Liquid and gas flow behaviour in highly rotating environment.

Development of non-destructive heat resistance evaluation system for TBC on gas turbine blade (2010)
Presentation / Conference Contribution

The use of thermal barrier coatings (TBCs) is the key technique for realizing high-efficiency gas turbine combined cycles. Hence, TBCs are applied to various hot gas path components such as combustors, blades, and vanes. The application of a TBC caus... Read More about Development of non-destructive heat resistance evaluation system for TBC on gas turbine blade.

Windage power losses from spiral bevel gears with varying oil flows and shroud configurations (2009)
Journal Article

In many aero-engines, the power to drive accessories is transmitted through high speed bevel gears in a chamber in the center of the engine. The windage power loss (WPL) associated with these gears makes a significant contribution to the overall heat... Read More about Windage power losses from spiral bevel gears with varying oil flows and shroud configurations.