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Sarıgöl, Barkin (author)Various potential flow methods with different assumptions are available to quantify the efficiency increase and thrust provided by a swirl recovery vane (SRV). In this paper, thrust coefficients and efficiency results obtained by different potential flow methods for the same SRV geometry at different advance ratios are presented. The methods...student report 2023
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Teruna, C. (author), Rego, Leandro (author), Casalino, D. (author), Ragni, D. (author), Avallone, F. (author)This manuscript presents the application of a recently developed noise reduction technology, constituted by poro-serrated stator blades on a full-scale aircraft model, in order to reduce rotor-stator interaction noise in the fan stage. This study was carried out using the commercial lattice Boltzmann solver 3DS-SIMULIA PowerFLOW. The simulation...journal article 2022
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Ge, Baoyun (author), Liu, Wenbo (author), Dong, J. (author), Liua, Mingda (author)High-performance electric drive applications necessitate a high fidelity model to predict the terminal characteristics of machines in the design stage to fulfill a system-level evaluation together with the converters. This article interprets winding function theory (WFT) from the field perspective and incorporates secondary effects, such as...journal article 2022
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Kotsis, Kosta (author)Based on a research conducted by the Civil Aviation Organization, by the year 2050 the emissions of aviation are expected to be 7 to 10 times higher than the levels in the beginning of the century. This will result in the emissions of CO2 from the aviation industry alone, to be higher than what the entire transportation industry is allowed for,...master thesis 2021
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Hariharan, Gayathri (author)Organic Rankine Cycle systems are gaining increasing attention as a modular, cost-effective and decentralised thermal energy recovery solution. The design of an efficient expander in the ORC system is crucial to its rapid uptake by the industry. Compared to volumetric expanders, a radial turbine provides advantages in terms of flexibility and...master thesis 2021
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CHOUDHURY, SALLENA (author)Induction motors have a significant role in every aspect of modern living. They are extensively used in every industry because of their robust construction, easy operation, controllable and adaptable features. Therefore, occurrence of faults in these machines are a major concern. The protection schemes implemented in a network plays an important...master thesis 2021
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Otero Rodriguez, G.J. (author), Smit, S.H.H.J. (author), Pecnik, Rene (author)Organic Rankine cycle (ORC) systems are a readily available technology to convert thermal energy from renewable- and waste heat sources into electricity. However, their thermal performance is relatively low due to the low temperature of the available heat sources, but more importantly, due to the low efficiency of the employed expander....journal article 2021
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Johri, Kartikay (author)There is a requirement for localised efficient electricity generation systems that increase the efficiency of power plants and reduce wasted heat from other engineering applications such as cement manufacturing units and brick kilns. Organic Rankine Cycle (ORC) power systems use organic fluids and low-grade heat sources to accomplish this. Lack...master thesis 2020
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Jhamb, Shubham (author)The scientific community is consistently focused on identifying new sources of energy, which can reduce the consequences of climate change and depleting natural resources. Organic Rankine Cycle (ORC) based power systems have been touted as one of the promising technologies of extracting thermal energy from waste-heat and renewable sources such...master thesis 2020
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Sanghera, Bhupinder Singh (author)Prior to the detailed design of turbines, turbomachinery engineers must rely on mean-line and throughflow models to come to a preliminary design. These models are based on empirical loss correlations and are often derived from cascade experiments and numerical analyses that are confined to the subsonic and transonic regime. Axial turbines for...master thesis 2020
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Liang, Jianbin (author), Jiang, James W. (author), Callegaro, Alan Dorneles (author), Bilgin, Berker (author), Dong, J. (author), Reeves, Debbie (author), Emadi, Ali (author)This study presents a numerical modelling approach for the prediction of vibration and acoustic noise for a 24/16 traction switched reluctance machine (SRM). The numerical modelling includes the simulation of electromagnetic force in JMAG, the calculation of natural frequencies and the simulation of vibration and acoustic noise in ACTRAN....journal article 2020
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Liu, Dong (author), Song, Xiaowei (author), Dong, J. (author)High temperature superconducting (HTS) generators are being considered for large offshore direct-drive (DD) wind turbines as they are expected to be lightweight and compact. However, short circuit torques of an HTS generator with integral-slot distributed windings (ISDWs) are too high for wind turbine constructions, mainly due to the large...journal article 2020
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Sharma, Nikhil (author)Rising carbon emissions and the International Maritime Organisation (IMO) have put immense pressure on ship owners to make ships more efficient. One way to make ships more efficient is to install an energy saving device (ESD). ESDs are designed to perform at vessel’s design speed and design draft. Thus, there is abundant information available on...master thesis 2019
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Teruna, C. (author), Ragni, D. (author), Avallone, F. (author), Casalino, D. (author)This manuscript presents a rod-linear cascade model for emulating rotor-stator interaction noise. The model is intended as a test platform for studying noise mitigation techniques for a turbofan fan stage, while it also extends the classical rod-airfoil configuration by considering a row of blades based on realistic geometrical details. The...journal article 2019
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Stuijt Giacaman, Jozef (author)Increasing concerns about the effects of freeing large quantities of greenhouse gases into the atmosphere have sparked interest in organic Rankine cycle for renewable power systems. Single-stage radial inflow turbines appear as suitable expansion devices for this type of application. However, supersonic conditions can be reached in the stator of...master thesis 2018
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Zhu, L. (author), Guo, J. (author), Gill, E.K.A. (author)In recent years, the increasing need in small satellite solutions triggers the miniaturization of attitude control systems. Reaction spheres were proposed as promising replacements of conventional reaction wheels for their 4π rotations. Since the generated control torques could be about any desired axes, a single reaction sphere is sufficient...journal article 2018
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Hassan, USMAN (author)Over the years, the use of PM machines has been increasing in the offshore wind industry and marine industry. The industries thrive on efficient function of the PM machines. These machines are prone to electro-mechanical faults due to environmental conditions and maintenance. Out of all these faults, stator internal faults are concerning as they...master thesis 2017
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De Koning, R.C.W. (author)Nowadays Organic Rankine Cycle (ORC) power systems are of paramount importance to exploit waste heat and renewable energy sources. Standard design rules and empirical models are mostly available for steam/gas turbines and can not be directly applied for ORC. Because of this, a redefinition of the design strategy is needed, starting from the...master thesis 2015
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Van Eeden, C.J. (author)Large rotating machines in all kinds of applications ages due to operating stresses. Since many years the condition of stator insulation in these motors and generators is investigated using measurement of partial discharge (PD) and dielectric loss factor (tan delta). In particular, off-line and on-line methods of applying PD detection have...master thesis 2010
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Zandbergen, T. (author)An experimental investigation was carried out in the low speed wind tunnel LST to study aircraft engine noise generation by rotor/stator interaction. Reported is a follow-up experiment including detailed acoustic measurements in the duct downstream of a rotor with cylindrical pins to complement earlier tests whereby rotor wake velocities and...report 1987