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Mechanisms for Residence Volume Reduction in Shallow Sump (2017)
Journal Article
Chandra, B., Simmons, K., & Murphy, A. (2018). Mechanisms for Residence Volume Reduction in Shallow Sump. Journal of Engineering for Gas Turbines and Power, 140(3), Article 032601. https://doi.org/10.1115/1.4037871

© 2018 by ASME. Gas turbine aero-engines employ fast rotating shafts that are supported by bearings at several axial locations along the engine. Due to extreme load and heat, oil is injected to the bearings to aid lubrication and cooling. The oil is... Read More about Mechanisms for Residence Volume Reduction in Shallow Sump.

A coupled Euler-Lagrange CFD modelling of droplets-to-film (2017)
Journal Article
Adeniyi, A. A., Morvan, H. P., & Simmons, K. A. (in press). A coupled Euler-Lagrange CFD modelling of droplets-to-film. Aeronautical Journal, 121(1246), https://doi.org/10.1017/aer.2017.107

In this paper, a droplet to film interaction model technique is presented. In the proposed approach, the liquid and gas continua are modelled using an enhanced Volume of Fluid (VoF) technique while the droplets are tracked using a Lagrangian framewor... Read More about A coupled Euler-Lagrange CFD modelling of droplets-to-film.

Experimental investigation of oil shedding from an aero-engine ball bearing at moderate speeds (2017)
Conference Proceeding
Santhosh, R., Hee, J. L., Simmons, K., Johnson, G., Hann, D., & Walsh, M. (2017). Experimental investigation of oil shedding from an aero-engine ball bearing at moderate speeds. In Proceedings of ASME Turbo Expo 2017 : Turbomachinery Technical Conference and Exposition. https://doi.org/10.1115/GT2017-63815

In civil aero-engine transmission system bearings are used for shaft location and load support. An experimental test facility in the University of Nottingham's Gas Turbine Transmissions Research Centre (G2TRC) was designed and commissioned to investi... Read More about Experimental investigation of oil shedding from an aero-engine ball bearing at moderate speeds.

Oil film thickness measurements on surfaces close to an aeroengine ball bearing using optical techniques (2017)
Conference Proceeding
Hee, J. L., Santhosh, R., Simmons, K., Johnson, G., Hann, D., & Walsh, M. (2017). Oil film thickness measurements on surfaces close to an aeroengine ball bearing using optical techniques. In Proceedings of ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition. https://doi.org/10.1115/GT2017-63813

In a civil aero-engine transmission system a number of bearings are used for shaft location and load support. A bespoke experimental test facility in the University of Nottingham's Gas Turbine and Transmissions Research Centre (G2TRC) was created to... Read More about Oil film thickness measurements on surfaces close to an aeroengine ball bearing using optical techniques.

Effect of vortex shedding on the performance of scoop based lubrication devices (2017)
Conference Proceeding
Prabhakar, A., Abakr, Y. A., & Simmons, K. (2017). Effect of vortex shedding on the performance of scoop based lubrication devices. In Proceedings of Turbo Expo 2017: Turbomachinery Technical Conference and Exposition. https://doi.org/10.1115/GT2017-63444

In civil aircraft aeroengine bearing chambers it is sometimes difficult to feed oil to bearings using the traditional under-race or targeted jet approaches. In such situations one proposed solution is that of a scoop delivery system. Published experi... Read More about Effect of vortex shedding on the performance of scoop based lubrication devices.

Computational Study of a Customised Shallow-Sump Aero-Engine Bearing Chamber With Inserts to Improve Oil Residence Volume (2017)
Conference Proceeding
Adeniyi, A. A., Chandra, B., & Simmons, K. (2017). Computational Study of a Customised Shallow-Sump Aero-Engine Bearing Chamber With Inserts to Improve Oil Residence Volume. In ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition. https://doi.org/10.1115/GT2017-64410

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.

Effect of Turbulence Damping in VOF Simulation of an Aero-Engine Bearing Chamber (2017)
Conference Proceeding
Bristot, A., Morvan, H., Simmons, K., & Klingsporn, M. (2017). Effect of Turbulence Damping in VOF Simulation of an Aero-Engine Bearing Chamber. . https://doi.org/10.1115/gt2017-63436

In aero-engine bearing chambers, the modelling of sheardriven oil films with the Volume of Fluid method poses significant challenges linked with the need to accurately capture the gasliquid interaction at the free surface. Typically, the modelling of... Read More about Effect of Turbulence Damping in VOF Simulation of an Aero-Engine Bearing Chamber.