All Outputs (24)

A machine learning-driven approach to predicting thermo-elasto-hydrodynamic lubrication in journal bearings (2024)
Journal Article

Traditional methods of evaluating the performance of journal bearings, for example thermal-elastic-hydrodynamic- lubrication theory, are limited to simplified conditions that often fail to accurately model real-world components. Numerical models that... Read More about A machine learning-driven approach to predicting thermo-elasto-hydrodynamic lubrication in journal bearings.

A New Thermal Elasto-Hydrodynamic Lubrication Solver Implementation in OpenFOAM (2023)
Journal Article

Designing effective thermal management systems within transmission systems requires simulations to consider the contributions from phenomena such as hydrodynamic lubrication regions. Computational fluid dynamics (CFD) remains computationally expensiv... Read More about A New Thermal Elasto-Hydrodynamic Lubrication Solver Implementation in OpenFOAM.

4-MW Class High-Power-Density Generator for Future Hybrid-Electric Aircraft (2021)
Journal Article

This article describes the underpinning research, development, construction, and testing of a 4-MW multithree phase generator designed for a hybrid-electric aircraft propulsion system demonstrator. The aim of the work is to demonstrate gravimetric po... Read More about 4-MW Class High-Power-Density Generator for Future Hybrid-Electric Aircraft.

Modeling of Partially Wetting Liquid Film Using an Enhanced Thin Film Model for Aero-Engine Bearing Chamber Applications (2021)
Journal Article

In the case of aero-engine, thin lubricating film servers dual purpose of lubrication and cooling. Prediction of dry patches or lubricant starved region in bearing or bearing chambers are required for safe operation of these components. In this work,... Read More about Modeling of Partially Wetting Liquid Film Using an Enhanced Thin Film Model for Aero-Engine Bearing Chamber Applications.

Research and Realization of High-Power Medium-Voltage Active Rectifier Concepts for Future Hybrid-Electric Aircraft Generation (2020)
Journal Article

In this article, we describe the research and development of a 3 kV active rectifier for a 4 MW aerospace generator drive system demonstrator. The converter is fed by a multiphase high-speed/high-frequency permanent magnet generator. The main aim of... Read More about Research and Realization of High-Power Medium-Voltage Active Rectifier Concepts for Future Hybrid-Electric Aircraft Generation.

Thermal and Electromagnetic Stator Vent Design Optimisation for Synchronous Generators (2020)
Journal Article

© 2020 Institute of Electrical and Electronics Engineers Inc.. All rights reserved. This paper deals with the stator cooling of an air-cooled, synchronous generator with a power rating of 400 kVA, which has been improved by adding two radial vents to... Read More about Thermal and Electromagnetic Stator Vent Design Optimisation for Synchronous Generators.

Numerical investigations of convective phenomena of oil impingement on end-windings (2019)
Journal Article

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.

Fluid flow and heat transfer analysis of TEFC machine end regions using more realistic end-winding geometry (2019)
Journal Article

Here, a typical small low-voltage totally enclosed fan-cooled (TEFC) motor (output power ∼10 kW) has been studied using computational fluid dynamics. The complexity of the end-winding geometries, often consisting of several insulated copper strands b... Read More about Fluid flow and heat transfer analysis of TEFC machine end regions using more realistic end-winding geometry.

CFD and experimental investigation into a non-intrusive method for measuring cooling air mass flow rate through a synchronous generator (2019)
Journal Article

An investigation into the use of CFD to model the co-firing of Jatropha curcas seed cake with coal (2018)
Journal Article

Jatropha curcas seed cake is a potential candidate for co-firing with coal. Combustion modelling using Ansys Fluent 14.0 was carried out to assess the combustion and co-firing characteristics of untorrefied and torrefied Jatropha curcas seed cake. Th... Read More about An investigation into the use of CFD to model the co-firing of Jatropha curcas seed cake with coal.

Applicability of mechanical tests for biomass pellet characterisation for bioenergy applications (2018)
Journal Article

In this paper, the applicability of mechanical tests for biomass pellet characterisation was investigated. Pellet durability, quasi-static (low strain rate), and dynamic (high strain rate) mechanical tests were applied to mixed wood, eucalyptus, sunf... Read More about Applicability of mechanical tests for biomass pellet characterisation for bioenergy applications.

Studies on combustion behaviours of single biomass particles using a visualization method (2017)
Journal Article

Combustion behaviours of single particles (125–150 μm) of eucalyptus, pine and olive residue were investigated by means of a transparent visual drop-tube furnace, electrically heated to 1073 K, and a high-speed camera coupling with a long distance mi... Read More about Studies on combustion behaviours of single biomass particles using a visualization method.

Benefits of dry comminution of biomass pellets in a knife mill (2017)
Journal Article

The potential benefits of dry comminution in a knife mill for a diverse range of biomass 6 pellets are explored. The impact of dry comminution on energy consumption, particle size and shape, 7 is examined as well as the link between milling and mecha... Read More about Benefits of dry comminution of biomass pellets in a knife mill.

Mechanical degradation of biomass wood pellets during long term stockpile storage (2017)
Journal Article

This paper quantifies and assesses the mechanical degradation of white wood and steam exploded wood pellets in indoor and outdoor stockpile storage over a twenty-one month period in the UK. The indoor stored steam exploded wood pellets on the surface... Read More about Mechanical degradation of biomass wood pellets during long term stockpile storage.

Overcoming the caking phenomenon in olive mill wastes (2017)
Journal Article

The use of olive mill wastes (orujillo) within coal fired power stations in the UK has led to unexpected difficulties with material caking within the fuel handling plant. This study replicated orujillo caking on a laboratory scale using a planetary b... Read More about Overcoming the caking phenomenon in olive mill wastes.

Combustion behavior profiling of single pulverized coal particles in a drop tube furnace through high-speed imaging and image analysis (2017)
Journal Article

Experimental investigations into the combustion behaviors of single pulverized coal particles are carried out based on high-speed imaging and image processing techniques. A high-speed video camera is employed to acquire the images of coal particles d... Read More about Combustion behavior profiling of single pulverized coal particles in a drop tube furnace through high-speed imaging and image analysis.

Characterising pulverised fuel ignition in a visual drop tube furnace by use of a high-speed imaging technique (2016)
Journal Article

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.

Changes in the mechanical properties of biomass wood pellets during artificial degradation in a laboratory environment (2016)
Journal Article

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

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

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.