All Outputs (827)

Numerical simulation of multi-scale oil films on a rotating cup using VOF and coupled Eulerian thin-film-dpm approaches (2022)
Conference Proceeding
Nicoli, A., Singh, K., Jefferson-Loveday, R., Ambrose, S., & Mouvanal, S. (2022). Numerical simulation of multi-scale oil films on a rotating cup using VOF and coupled Eulerian thin-film-dpm approaches. . https://doi.org/10.1115/GT2022-82533

In this study, the newly developed Nottingham Gas Turbine and Transmission Research Centre (G2TRC) Bearing Chamber Test Module is presented and investigated computationally. The module houses a rotating cup and shaft configuration in order to simulat... Read More about Numerical simulation of multi-scale oil films on a rotating cup using VOF and coupled Eulerian thin-film-dpm approaches.

Numerical characterisation of noise generated by a distributed-propulsion propeller (2022)
Conference Proceeding
Sharma, S., Huang, G., Ambrose, S., & Jefferson-Loveday, R. (2022). Numerical characterisation of noise generated by a distributed-propulsion propeller. . https://doi.org/10.2514/6.2022-2878

The shift towards sustainable and eco-friendly future of aviation is further catalysed by the aggressive targets set by administrative and industrial stakeholders. It has emerged as one of the solutions with the potential to increase overall efficien... Read More about Numerical characterisation of noise generated by a distributed-propulsion propeller.

Droplet Impact on a Curved Moving Liquid Film (2022)
Conference Proceeding
Sinha, A., Ramakrishnan, V., & Johnson, K. (2022). Droplet Impact on a Curved Moving Liquid Film. In Proceedings of the ASME TURBO EXPO 2022: Turbomachinery Technical Conference & Exposition. GT 2022 June 13-17, 2022, Rotterdam, Netherlands. https://doi.org/10.1115/GT2022-79505

The European Commission has set targets to reduce the emissions of CO2 and NOx by 75% and 90% respectively, per passenger kilometre, by 2050. Computational modelling of elements within the aero-engine will play a key role in achieving this goal. Curr... Read More about Droplet Impact on a Curved Moving Liquid Film.

Numerical Investigation Into Maximum Pressure Capability of Intershaft Hydraulic Seals (2022)
Conference Proceeding
Warusevitane, A., Johnson, K., & Ambrose, S. (2022). Numerical Investigation Into Maximum Pressure Capability of Intershaft Hydraulic Seals. In Proceedings of ASME Turbo Expo 2022 Turbomachinery Technical Conference and Exposition GT2022 June 13-17, 2022, Rotterdam, The Netherlands. https://doi.org/10.1115/GT2022-82196

Hydraulic seals are used as intershaft seals in aero-engines and consist of an oil filled trough on the higher speed shaft and a fin on the lower speed shaft that dips into the oil forming the seal. Rotation is imparted to the sealing fluid within th... Read More about Numerical Investigation Into Maximum Pressure Capability of Intershaft Hydraulic Seals.

Experimental Investigation Into Oil Shedding From a Rotating Cup Geometry (2022)
Conference Proceeding
Cageao, P. P., Johnson, K., Ambrose, S., & Omar, R. (2022). Experimental Investigation Into Oil Shedding From a Rotating Cup Geometry. In Proceedings of the ASME 2022 Turbomachinery Technical Conference & Exposition Turbo Expo 2022 June 13-17, 2022, Rotterdam, The Netherlands. https://doi.org/10.1115/GT2022-82195

Oil shedding from rotating components and static elements within rotating systems has a number of applications within the design and understanding of transmission systems as well as wider industrial applications. There is a reasonable body of prior r... Read More about Experimental Investigation Into Oil Shedding From a Rotating Cup Geometry.

Investigation of Droplet Shedding in an Aeroengine Bearing Chamber Using Convolutional Neural Networks (2022)
Conference Proceeding
Farbrother, K., Cageao, P. P., Johnson, K., & Ambrose, S. (2022). Investigation of Droplet Shedding in an Aeroengine Bearing Chamber Using Convolutional Neural Networks. In Proceedings of the ASME 2022 Turbomachinery Technical Conference & Exposition GT2022 June 13-17, 2022, Rotterdam, The Netherlands. https://doi.org/10.1115/GT2022-82275

More efficient aeroengines are needed to reduce the environmental impact of civil aviation. Design changes for increased efficiency mean that higher loads are transmitted through the bearings supporting the rotating shafts. Better bearing chamber des... Read More about Investigation of Droplet Shedding in an Aeroengine Bearing Chamber Using Convolutional Neural Networks.

Analytical Model for the Open Circuit Field due to Different Magnetization Patterns of the rotor in the Slotless Machines (2022)
Conference Proceeding
Dave, N., Gerada, D., Vakil, G., Zhang, H., Li, J., & Gerada, C. (2022). Analytical Model for the Open Circuit Field due to Different Magnetization Patterns of the rotor in the Slotless Machines. In 2022 International Conference on Electrical Machines (ICEM) (1204-1210). https://doi.org/10.1109/icem51905.2022.9910580

From the existing literature, the open circuit field due to different magnetisations of the rotor magnets is known. This includes field due to parallel, radial and Halbach magnetisation. This paper presents the generalised analytical model to represe... Read More about Analytical Model for the Open Circuit Field due to Different Magnetization Patterns of the rotor in the Slotless Machines.

Predictions of falling wavy films based on the depth averaged thin film model and its application to aeroengine bearing chamber (2022)
Conference Proceeding
Singh, K., Nicoli, A., Jefferson-Loveday, R., Ambrose, S., Paleo Cageao, P., Johnson, K., …Jacobs, A. (2022). Predictions of falling wavy films based on the depth averaged thin film model and its application to aeroengine bearing chamber. . https://doi.org/10.1115/gt2022-78010

In the present study, the evolution of a falling wavy film with upstream forced excitation is investigated using the depth averaged thin film model, known as Eulerian Thin Film Model (ETFM). Because of the depth averaging of the governing equations,... Read More about Predictions of falling wavy films based on the depth averaged thin film model and its application to aeroengine bearing chamber.

Numerical Simulation of Multi-Scale Oil Films on a Rotating Cup Using VOF and Coupled Eulerian Thin-Film-DPM Approaches (2022)
Conference Proceeding
Nicoli, A., Singh, K., Jefferson-Loveday, R., Ambrose, S., & Mouvanal, S. (2022). Numerical Simulation of Multi-Scale Oil Films on a Rotating Cup Using VOF and Coupled Eulerian Thin-Film-DPM Approaches. In ASME Turbo Expo 2022: Turbomachinery Technical Conference and Exposition. https://doi.org/10.1115/gt2022-82533

In this study, the newly developed Nottingham Gas Turbine and Transmission Research Centre (G2TRC) Bearing Chamber Test Module is presented and investigated computationally. The module houses a rotating cup and shaft configuration in order to simulat... Read More about Numerical Simulation of Multi-Scale Oil Films on a Rotating Cup Using VOF and Coupled Eulerian Thin-Film-DPM Approaches.

Settlement analysis of column-like elements (2022)
Conference Proceeding
Wanatowski, D., Al-Ani, W., & Grizi, A. (2022). Settlement analysis of column-like elements. In Proceedings of the 20th International Conference on Soil Mechanics and Geotechnical Engineering, Sydney 2021

In recent years, column-like elements have been recognized as an effective ground improvement method to support superstructures constructed on soft soils. Different types of columns are characterized by different construction techniques, rigidity and... Read More about Settlement analysis of column-like elements.

Frequency scanning interferometry for accurate robot position measurement (2022)
Conference Proceeding
Isa, M. A., Khanesar, M. A., Leach, R., Branson, D., & Piano, S. (2022). Frequency scanning interferometry for accurate robot position measurement. In Proceedings of 22nd International Conference & Exhibition

This paper presents a frequency scanning interferometry (FSI) shortwave infrared (IR) setup developed for position and orientation measurement of industrial robots. Within contemporary and future industrial frameworks, robots—in particular collaborat... Read More about Frequency scanning interferometry for accurate robot position measurement.

Aerothermal simulation of the effect of hot-streak and residual swirl on a high pressure turbine stage (2022)
Conference Proceeding
Mansouri, Z., & Jefferson-Loveday, R. (2022). Aerothermal simulation of the effect of hot-streak and residual swirl on a high pressure turbine stage. In Proceedings of the 17th UK Heat Transfer Conference

In new generation aero-engines, lean-burn combustors are equipped with swirl injectors in order to reduce pollutant emissions. At the exit of these combustors, the flow is dominated by temperature non-uniformity (hot-streak) and residual swirl. Avail... Read More about Aerothermal simulation of the effect of hot-streak and residual swirl on a high pressure turbine stage.

A Bio-degradable Textile-Based Graphene Antenna for the 5G Smart Wearables (2022)
Conference Proceeding
Thompson, O., Alkaraki, S., Abbasi, Q. H., Jilani, S. F., & Evans, D. A. (2022). A Bio-degradable Textile-Based Graphene Antenna for the 5G Smart Wearables. In 2022 16th European Conference on Antennas and Propagation (EuCAP) (1-4). https://doi.org/10.23919/eucap53622.2022.9769657

This paper proposes a bio-degradable antenna design well-suited for the 5 th generation (5G) wearables. This antenna has a graphene patterning instead of conventional metallization on a textile substrate to make it eco-friendly as it avoids copper co... Read More about A Bio-degradable Textile-Based Graphene Antenna for the 5G Smart Wearables.

3D Printed Slotted Waveguide Antenna Array for Millimeter-wave Communication Systems (2022)
Conference Proceeding
Khan, Z. U., Alkaraki, S., Abbasi, Q. H., Imran, M. A., Loh, T. H., & Alomainy, A. (2022). 3D Printed Slotted Waveguide Antenna Array for Millimeter-wave Communication Systems. In 2022 16th European Conference on Antennas and Propagation (EuCAP) (1-4). https://doi.org/10.23919/eucap53622.2022.9769598

This paper introduces a 3D printed slotted waveguide linear antenna array at 28 GHz. The proposed antenna offers the advantages of low fabrication cost and reduced weight compared to the metallic slotted waveguide antenna array. The proposed design c... Read More about 3D Printed Slotted Waveguide Antenna Array for Millimeter-wave Communication Systems.

Liquid Metal Enabled SIW Vias and RF Blocking Walls for Reconfigurable Antennas (2022)
Conference Proceeding
Alkaraki, S., Qu, Z., Kelly, J., Borja, A. L., Mittra, R., & Wang, Y. (2022). Liquid Metal Enabled SIW Vias and RF Blocking Walls for Reconfigurable Antennas. In 2022 16th European Conference on Antennas and Propagation (EuCAP) (1-5). https://doi.org/10.23919/eucap53622.2022.9769614

This paper presents a method for designing reconfigurable microwave devices based on substrate integrated waveguides (SIW) technology. The method involves forming walls from drill holes that can be filled with liquid metal to form vias. Furthermore,... Read More about Liquid Metal Enabled SIW Vias and RF Blocking Walls for Reconfigurable Antennas.

Phase Reconfiguration via SIW Structures Filled with Liquid Metal (2022)
Conference Proceeding
Alkaraki, S., Borja, A. L., Kelly, J., Jilani, S. F., Mittra, R., & Gao, Y. (2022). Phase Reconfiguration via SIW Structures Filled with Liquid Metal. In 2022 16th European Conference on Antennas and Propagation (EuCAP) (1-5). https://doi.org/10.23919/eucap53622.2022.9769417

This paper presents substrate integrated waveguide (SIW) phase shifter that can be reconfigured using liquid metal. The phase shifter is developed to be used for antenna applications. This digital phase shifter incorporates a series of holes which ca... Read More about Phase Reconfiguration via SIW Structures Filled with Liquid Metal.

A study of weighting factor design in model predictive control applications (2022)
Conference Proceeding
Rojas, D., Rivera, M., Munoz, J., Baier, C., & Wheeler, P. (2022). A study of weighting factor design in model predictive control applications. In 2021 IEEE CHILEAN Conference on Electrical, Electronics Engineering, Information and Communication Technologies (CHILECON). https://doi.org/10.1109/chilecon54041.2021.9702932

Weighting factor selection is considered to be a crucial aspect in the design of a predictive controller. In this paper a study of the design of weighting factors for different cost functions is presented. The study is based on three examples: switch... Read More about A study of weighting factor design in model predictive control applications.

Transfering ultra-Thin metallic metasurfaces to fibre endoscope probes for advanced imaging (2022)
Conference Proceeding
Fuentes-Dominguez, R., He, F., Cousins, R., Mellor, C. J., & Gordon, G. S. D. (2022). Transfering ultra-Thin metallic metasurfaces to fibre endoscope probes for advanced imaging. In Proceedings SPIE 11953, Optical Fibers and Sensors for Medical Diagnostics, Treatment and Environmental Applications XXII. https://doi.org/10.1117/12.2608774

In this paper we present a method to transfer ultra-Thin polymer-encapsulated metallic metasurfaces onto optical fibers to enable ultra-Thin imaging devices. The metasurface is first produced by conventional e-beam lithography on a silicon substrate... Read More about Transfering ultra-Thin metallic metasurfaces to fibre endoscope probes for advanced imaging.

Reconfigurable Cascaded Multilevel Converter design for Battery Energy System Storage (2022)
Conference Proceeding
Tresca, G., Formentini, A., Di Salvo, S., Leuzzi, R., Anglani, N., & Zanchetta, P. (2022). Reconfigurable Cascaded Multilevel Converter design for Battery Energy System Storage. . https://doi.org/10.1109/SPEEDAM53979.2022.9842134

This paper presents the Reconfigurable Cascaded Multilevel converter employed for battery energy storage systems. The main advantage lies on the possibility to fully control each battery cell, improving the overall performances of the storage system.... Read More about Reconfigurable Cascaded Multilevel Converter design for Battery Energy System Storage.

Model predictive control for a dual three-phase two-sector permanent magnet synchronous machine (2021)
Conference Proceeding
Chen, Y., Yang, T., Bozhko, S., Nasir, U., Rodriguez, J. R., & Garcia, C. F. (2021). Model predictive control for a dual three-phase two-sector permanent magnet synchronous machine. In 10th International Conference on Power Electronics, Machines and Drives (PEMD 2020) (581–585). https://doi.org/10.1049/icp.2021.1134

A novel dual three-phase permanent magnet synchronous machine is designed for taxiing motor-generator on propeller aircraft. The unique structre of machine enhances system reliability, and also brings extra merits such as reducing torque ripple when... Read More about Model predictive control for a dual three-phase two-sector permanent magnet synchronous machine.