All Outputs (43)

Characterising pulverised fuel ignition in a visual drop tube furnace by use of a high-speed imaging technique (2016)
Journal Article
Sarroza, A. C., Bennet, T. D., Eastwick, C., & Liu, H. (in press). Characterising pulverised fuel ignition in a visual drop tube furnace by use of a high-speed imaging technique. Fuel Processing Technology, 157, https://doi.org/10.1016/j.fuproc.2016.11.002

This study investigates the ignition characteristics of pulverised coal, biomass and co-firing by use of a visual drop tube furnace (VDTF) and a high speed imaging technique. Three coals (anthracite, a bituminous coal and a lignite), four biomasses (... Read More about Characterising pulverised fuel ignition in a visual drop tube furnace by use of a high-speed imaging technique.

Thermal management of a high speed permanent magnet machine for an aeroengine (2016)
Presentation / Conference Contribution
La Rocca, A., Xu, Z., Arumugam, P., Pickering, S., Eastwick, C., Gerada, C., & Bozhko, S. (2016). Thermal management of a high speed permanent magnet machine for an aeroengine.

The paper describes the mechanical and thermal design of a high speed, high power density synchronous permanent magnet machine for an aero engine starter generator system with a power rating of 150 kW and maximum speed of 32,000 rpm. As both mechanic... Read More about Thermal management of a high speed permanent magnet machine for an aeroengine.

Influence of mill type on densified biomass comminution (2016)
Journal Article
Williams, O., Newbolt, G., Eastwick, C., Kingman, S. W., Giddings, D., Lormor, S., & Lester, E. (2016). Influence of mill type on densified biomass comminution. Applied Energy, 182, 219-231. https://doi.org/10.1016/j.apenergy.2016.08.111

The impact of different mill fracture mechanisms were examined for a wide range of densified biomass pellets to provide a comprehensive analysis of biomass milling behaviour for pulverised fuel combustion. The milling behaviour of 7 woody, herbaceous... Read More about Influence of mill type on densified biomass comminution.

Changes in the mechanical properties of biomass wood pellets during artificial degradation in a laboratory environment (2016)
Journal Article
Graham, S. L., Ogunfayo, I., Hall, M. R., Snape, C., Quick, W., Weatherstone, S., & Eastwick, C. (2016). Changes in the mechanical properties of biomass wood pellets during artificial degradation in a laboratory environment. Fuel Processing Technology, https://doi.org/10.1016/j.fuproc.2016.03.020

In stockpiles exposed to high relative humidity (RH) and rainfall, woody biomass pellets lose structural integrity, often assumed to be due to the uptake of moisture from the environment. In this study three different types of biomass pellet were art... Read More about Changes in the mechanical properties of biomass wood pellets during artificial degradation in a laboratory environment.

Thermochemical and structural changes in Jatropha curcas seed cake during torrefaction for its use as coal co-firing feedstock (2016)
Journal Article
Madanayakea, B. N., Gan, S., Eastwick, C., & Ng, H. K. (2016). Thermochemical and structural changes in Jatropha curcas seed cake during torrefaction for its use as coal co-firing feedstock. Energy, 100, https://doi.org/10.1016/j.energy.2016.01.097

Jatropha curcas seed cake is a viable feedstock for co-firing with coal as it has the advantages of being renewable, carbon-neutral and sourced from a versatile plant. Torrefaction, a mild pyrolysis treatment by heating in a N2 atmosphere, was invest... Read More about Thermochemical and structural changes in Jatropha curcas seed cake during torrefaction for its use as coal co-firing feedstock.

Leaching as a pretreatment process to complement torrefaction in improving co-firing characteristics of Jatropha curcas seed cake (2015)
Journal Article
Madanayake, B. N., Gan, S., Eastwick, C., & Ng, H. K. (2016). Leaching as a pretreatment process to complement torrefaction in improving co-firing characteristics of Jatropha curcas seed cake. Waste and Biomass Valorization, 7(3), 559-569. https://doi.org/10.1007/s12649-015-9467-z

The presence of certain inorganic elements in biomass causes issues such as slagging, fouling and corrosion when co-firing with coal for power generation. In this work, the efficacy of leaching to remove these elements from Jatropha curcas seed cake... Read More about Leaching as a pretreatment process to complement torrefaction in improving co-firing characteristics of Jatropha curcas seed cake.

Impact of mill type on biomass mill behavior (2015)
Presentation / Conference Contribution
Williams, O., Eastwick, C., Lester, E., Giddings, D., & Lormor, S. (in press). Impact of mill type on biomass mill behavior.

With increasing use of biomass in pulverized fuel coal fired power stations, the impact of mill type on biomass size and shape is fundamental in optimizing mill and burner performance. The impact of mill type on the energy consumption, particle size... Read More about Impact of mill type on biomass mill behavior.

Investigation into the applicability of Bond Work Index (BWI) and Hardgrove Grindability Index (HGI) tests for several biomasses compared to Colombian La Loma coal (2015)
Journal Article
Williams, O., Eastwick, C., Kingman, S., Giddings, D., Lormor, S., & Lester, E. (2015). Investigation into the applicability of Bond Work Index (BWI) and Hardgrove Grindability Index (HGI) tests for several biomasses compared to Colombian La Loma coal. Fuel, 158, https://doi.org/10.1016/j.fuel.2015.05.027

With increasing quantities of biomass being combusted in coal fired power stations, there is an urgent need to be able to predict the grindability of biomass in existing coal mills, but currently no standard biomass grindability test exists. In this... Read More about Investigation into the applicability of Bond Work Index (BWI) and Hardgrove Grindability Index (HGI) tests for several biomasses compared to Colombian La Loma coal.

Numerical study on a two-stage metal hydride hydrogen compression system (2015)
Journal Article
Gkanas, E. I., Grant, D. M., Stuart, A. D., Eastwick, C., Book, D., Nayebossadri, S., …Walker, G. S. (in press). Numerical study on a two-stage metal hydride hydrogen compression system. Journal of Alloys and Compounds, 645(Supp1), Article S18-S22. https://doi.org/10.1016/j.jallcom.2015.03.123

A multistage Metal Hydride Hydrogen Compression (MHHC) system uses a combination of hydride materials in order to increase the total compression ratio, whilst maximizing the hydrogenation rate from the supply pressure at each stage. By solving the co... Read More about Numerical study on a two-stage metal hydride hydrogen compression system.

The impact of moisture on the milling behavior of different biomasses (2014)
Presentation / Conference Contribution
Williams, O., Eastwick, C., Lester, E., Giddings, D., & Byrne, N. (2014). The impact of moisture on the milling behavior of different biomasses.

The aim of this study was to examine the impact of moisture content on the milling behaviour of four different biomasses commonly used in the power sector and characterise their milling behaviour in a laboratory scale planetary ball mill. As received... Read More about The impact of moisture on the milling behavior of different biomasses.

Optimisation of biomass milling for conveyance and combustion (2013)
Presentation / Conference Contribution
Williams, O., Eastwick, C., Lester, E., Giddings, D., & Byrne, N. (2013). Optimisation of biomass milling for conveyance and combustion.

Agricultural wastes are increasingly being used as biomass materials for co-firing in coal fired power stations. However issues in milling and conveyance of agricultural residues are limiting the use of these resources and a greater understanding of... Read More about Optimisation of biomass milling for conveyance and combustion.

Computational fluid dynamics modelling of an entire synchronous generator for improved thermal management (2013)
Journal Article
Connor, P. H., Pickering, S., Gerada, C., Eastwick, C., Micallef, C., & Tighe, C. (2013). Computational fluid dynamics modelling of an entire synchronous generator for improved thermal management. IET Electric Power Applications, 7(3), https://doi.org/10.1049/iet-epa.2012.0278

This study is the first in a series dedicated to investigating the airflow and thermal management of electrical machines. Owing to the temperature dependent resistive losses in the machine's windings, any improvement in cooling provides a direct redu... Read More about Computational fluid dynamics modelling of an entire synchronous generator for improved thermal management.

Noise levels and noise perception from small and micro wind turbines (2013)
Journal Article
Taylor, J., Eastwick, C., Lawrence, C., & Wilson, R. (in press). Noise levels and noise perception from small and micro wind turbines. Renewable Energy, 55, https://doi.org/10.1016/j.renene.2012.11.031

Noise concerns frequently pose a barrier to widespread implementation of wind turbines and while the perception of noise from large turbines has been investigated, there is a relative gap in the research for small and micro wind turbines. This paper... Read More about Noise levels and noise perception from small and micro wind turbines.

Modelling windage power loss from an enclosed spur gear (2007)
Journal Article
Eastwick, C., Simmons, K., & Al-Shibl, K. (2007). Modelling windage power loss from an enclosed spur gear. Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, 221(3), https://doi.org/10.1243/09576509JPE344

Within a gearbox the majority of transmission losses can be attributed to bearing losses, meshing losses, or losses due to windage/churning. In this paper the commercial computational fluid dynamics (CFD) code Fluent 6.2.16 is applied in a two-dimens... Read More about Modelling windage power loss from an enclosed spur gear.

Study of aero-engine oil-air separators (2006)
Journal Article
Wang, Y., Simmons, K., Eastwick, C., & Hibberd, S. (2006). Study of aero-engine oil-air separators. Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, 220(7), https://doi.org/10.1243/09576509JPE116

For aero-engines, oil-air separation is a key function, and one approach to assessing separator effectiveness is computational fluid dynamics (CFD). The two-phase flow is complex and oil can be present in different forms (for example, droplets, mist,... Read More about Study of aero-engine oil-air separators.

Stator and rotor vent modelling in a MVA rated synchronous machine
Presentation / Conference Contribution
Connor, P. H., Eastwick, C., Pickering, S. J., Gerada, C., & Rolston, R. (2016, September). Stator and rotor vent modelling in a MVA rated synchronous machine. Presented at 2016 XXII International Conference on Electrical Machines (ICEM), Lausanne, Switzerland

An investigation into the solution dependence of a conjugate heat transfer computational fluid dynamics (CFD) model of a synchronous generator, with respect to meshing, has been carried out. Utilising CFD as a tool for investigating the airflow and t... Read More about Stator and rotor vent modelling in a MVA rated synchronous machine.

State of the Art of Electric Taxiing Systems
Presentation / Conference Contribution
Lukic, M., Hebala, A., Giangrande, P., Klumpner, C., Nuzzo, S., Chen, G., Gerada, C., Eastwick, C., & Galea, M. (2018, November). State of the Art of Electric Taxiing Systems. Presented at 2018 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles & International Transportation Electrification Conference (ESARS-ITEC), Nottingham, UK

The aviation industry represents an ever-expanding economy and the aircraft market forecast reveals an optimistic growth for the coming decades. New requirements and guidelines call for a more efficient, reliable, and environment friendly aircraft op... Read More about State of the Art of Electric Taxiing Systems.

Prediction of Film Thickness of an Aero-Engine Bearing Chamber using Coupled VOF and Thin Film Model
Presentation / Conference Contribution
Singh, K., Sharabi, M., Ambrose, S., Eastwick, C., & Jefferson-Loveday, R. J. (2019, June). Prediction of Film Thickness of an Aero-Engine Bearing Chamber using Coupled VOF and Thin Film Model. Presented at ASME Turbo Expo 2019 Turbomachinery Technical Conference & Exposition, Phoenix, Arizona, United States

In the present work, a coupled volume-of-fluid (VOF) model with Eulerian thin-film model (ETFM) approach is used to predict the film thickness in an aero-engine bearing chamber. Numerical studies are conducted for a wide range of shaft speeds with lu... Read More about Prediction of Film Thickness of an Aero-Engine Bearing Chamber using Coupled VOF and Thin Film Model.

Air-Cooling of a Hollow High-Speed Permanent Magnet Rotor
Presentation / Conference Contribution
Connor, P. H., La Rocca, A., Xu, Z., Degano, M., Eastwick, C. N., Pickering, S. J., & Gerada, C. (2019, May). Air-Cooling of a Hollow High-Speed Permanent Magnet Rotor. Presented at 2019 IEEE International Electric Machines and Drives Conference, IEMDC 2019, San Diego, USA

This paper presents a computational fluid dynamics conjugate heat transfer analysis of internal and external cooling paths for a hollow high-speed permanent magnet rotor. Extracting magnet losses from high-speed permanent magnet rotors is challenging... Read More about Air-Cooling of a Hollow High-Speed Permanent Magnet Rotor.

Numerical investigations of convective phenomena of oil impingement on end-windings
Presentation / Conference Contribution
Connor, P. H., La Rocca, A., Xu, Z., Eastwick, C. N., Pickering, S. J., & Gerada, C. (2018, April). Numerical investigations of convective phenomena of oil impingement on end-windings. Presented at 9th International Conference on Power Electronics, Machines and Drives (PEMD 2018), Liverpool

A novel experimental rig for analysing intensive liquid cooling of highly power-dense electrical machine components has been developed. Coupled fluid flow and heat transfer have been modelled, using computational fluid dynamics (CFD), to inform the d... Read More about Numerical investigations of convective phenomena of oil impingement on end-windings.