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Matabuena Sedano, Luis (author)This document contains the final Master Thesis Report to obtain the Master of Science on Aerospace Engineering (Flight Performance & Propulsion - Propulsion & Power) at the Delft University of Technology.<br/><br/>The research work focuses on characterizing the interaction of a radial inlet turbine with a downstream diffuser through the...master thesis 2023
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de Waart, Wessel (author)In the pursuit of reducing the climate impact of aviation, there has been an increased interest in the adoption of renewable energy technologies. Examples of revolutionary technologies include hydrogen fuel cell systems and waste heat recovery using the organic Rankine cycle. The design of viable energy conversion systems for aviation poses...master thesis 2023
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Martorelli, Luca (author)The use of CFD-based optimizations is becoming a standard for turbomachinery design. Although the use of such optimizations can lead to great improvements of the machine performances, there are still several shortcomings in the common design procedure of turbomachines. In fact, this entails the optimization of the component shape, and only a...master thesis 2023
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Wilkens, Laurent (author)This work sets out the creation, verification and demonstration of an automated end-to-end tool for the multi-point fluid-dynamic optimization of turbomachinery. Taking into account multiple operating conditions during optimization aims to benefit the overall performance of turbomachines which are characterized by off-design operation and to...master thesis 2022
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Mulder, Bas (author)With variable renewable energy on the rise, large-scale energy storage is needed to assure grid stability. Thermal energy storage (TES) is a new player in the large-scale energy storage landscape, but might prove a cheap, safe and reliable option, with low permitting barriers. TES is not geographically limited, generally compact and has a low...master thesis 2022
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Evertse, Tom (author)In the battle against climate change, humankind needs to develop alternative energy systems if it wants to survive on this planet. Fossil fuels, polluting the air with CO2, must make way for renewable sources so that climate change is put to a stop. Several new energy initiatives based on renewable sources are deployed worldwide, these however...master thesis 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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Gaens, Hendrik (author)In the pursuit of a new ultra-efficient generation of turbomachines, novel and more sophisticated flow simulation and optimization methods have to be adopted. With the development of harmonic balance (HB) methods and adjoint optimization, questions arise on the concrete benefits of using one method over another. This research investigates the...master thesis 2020
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Latour, Marc (author)Next-generation propulsion systems will likely take advantage of boundary layer ingestion (BLI), which requires simulation and design tools to perform optimization at an affordable cost while taking airframe interaction into account. A solution for this problem is the reduced-order body force model (BFM). It allows for computationally...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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Ng, Stanley (author)Increased public awareness and political concern about the environmental footprint of aviation have created very ambitious goals to reduce emissions in the future. This objective of this research project is to develop a multidisciplinary turbofan engine design and sizing tool for conceptual engine design. The tool will be used in a parametric...master thesis 2020
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Garrido de la Serna, Pablo (author)In order to reduce the carbon foot-print of turbo-generators to global warming, a step-change in the design process is needed. Extensive CFD simulations coupled with optimization algorithms are required, resorting to novel techniques to capture the complex flow phenomena occurring in the passage. However, the computation of the optimization...master thesis 2019
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Castro de Castro, Íñigo (author)The open-source SU2 suite has been subject to extensive verification and validation studies in the past few years. Through such studies, the ability of the SU2 CFD solver to produce high-fidelity results for external flows has been substantiated by data from numerous testcases. Interest in applying the suite to turbomachinery flow analysis and...master thesis 2019
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Rubino, A. (author)The need to meet the increasingly demanding sustainability goals entails remarkable new challenges for technical innovation. Due to the crucial role of turbomachinery in present and future energy scenarios, advancements in turbomachinery performance by means of design methods represent a fundamental step towards global sustainable development....doctoral thesis 2019
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Aissa, M.H. (author)Design optimization relies heavily on time-consuming simulations, especially when using gradient-free optimization methods. These methods require a large number of simulations in order to get a remarkable improvement over reference designs, which are nowadays based on the accumulated engineering knowledge already quite optimal.<br/>High...doctoral thesis 2017
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Francés Mollá, V. (author)Turbomachines have experienced a fast development over the last years, and are present in a wide range of devices involved in the generation of electricity and the transportation sector. Current challenges in both sectors have driven quite a number of developments regarding the increase of efficiency and use of new types of devices. Those...master thesis 2017
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Bahamonde, Juan S. (author), Pini, M. (author), de Servi, C.M. (author), Colonna, Piero (author)The preliminary fluid dynamic design of turbomachinery operating with non-standard working fluids and unusual operating conditions and specifications can be very challenging because of the lack of know-how and guidelines. Examples are the design of turbomachinery for small-capacity organic Rankine cycle and supercritical CO<sub>2</sub> cycle...journal article 2017
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Rubino, A. (author), Pini, M. (author), Colonna, Piero (author)Currently, turbomachinery design optimization methodologies are mainly restricted to steady state approaches, due to the high computational cost associated with time-accurate shape optimization algorithms. However, the possibility to include unsteady effects in turbomachinery optimization can significantly increase the level of accuracy of...conference paper 2017
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Spazzoli, S. (author)Supercritical CO2 (s-CO2) Brayton cycle is indicated as one of the possible substitutes of the traditional steam cycle, that is currently used to produce the biggest share of electricity. Specifically, one of main candidates is the Brayton recompression cycle, that has been investigated for a wide range of operating conditions. This work is...master thesis 2016
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Berthold, C.R. (author)In this work a numerical method is developed to efficiently simulate limit cycle oscillations and forced response amplitudes of fluid-structure interaction (FSI) problems. The method computes a solution in the frequency-domain and can therefore only deal with periodic unsteadiness. As flow solver the Harmonic Balance method is used which is...master thesis 2016
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