- document
-
Deng, Z. (author), Muñoz Sierra, Julian (author), Ferreira, Ana Lucia Morgado (author), Cerqueda Garcia, D. (author), Spanjers, H. (author), van Lier, J.B. (author)Treating protein-rich wastewater using cost-effective and simple-structured single-stage reactors presents several challenges. In this study, we applied an anaerobic sequencing batch reactor (AnSBR) to treat protein-rich wastewater from a slaughterhouse. We focused on identifying the key factors influencing the removal of chemical oxygen...journal article 2023
- document
-
Pinto Ribeiro, A. (author), Casalino, D. (author), Ferreira, Carlos (author)This paper presents low speed fluid structure interaction simulations of a highly flexible wing at various flow conditions, including flutter and excitation from sinusoidal gusts. Such wings are becoming more relevant in recent years, due to their potential for improving aerodynamics and reducing weight, while their flutter characteristics...journal article 2023
- document
-
Huang, M. (author), Vijaykumar Patil, Yugandhar (author), Sciacchitano, A. (author), Ferreira, Carlos (author)Wakes and wake interactions in wind turbine arrays diminish energy output and raise the risk of structural fatigue; hence, comprehending the features of rotor–wake interactions is of practical relevance. Previous studies suggest that vertical axis wind turbines (VAWTs) can facilitate a quicker wake recovery. This study experimentally...journal article 2023
- document
-
Lourenço, Miguel Sério (author), Fernández Ruiz, Miguel (author), Blaauwendraad, J. (author), Bousias, Stathis (author), Hoang, Linh Cao (author), Mata-Falcón, Jaime (author), Meléndez, Carlos (author), Mihaylov, Boyan I. (author), Ferreira, Miguel Pedrosa (author)The introduction of strut-and-tie models in fib Model Code 1990 as a design basis for discontinuity regions constituted a significant step toward promoting consistent design methods for reinforced concrete structures. In fib Model Code 2010, the scope was broadened through the stress field method that was introduced as a complementary tool....journal article 2023
- document
-
Ferreira, J.P. (author), Ferras, David (author), Covas, Dídia I.C. (author), Kapelan, Z. (author)Stormwater management model (SWMM) software has recently become a modeling tool for the simulation of intermittent water supply systems. However, SWMM is not capable of accurately simulating the air behavior in the pipe-filling phase, missing therefore a relevant factor during pipe pressurization. This work proposes the integration of a...journal article 2023
- document
-
Filgueiras, Manuel (author), Gkiotsalitis, Konstantinos (author), Yap, M.D. (author), Cats, O. (author), Lobo, António (author), Ferreira, Sara (author)A transit network design frequency setting model is proposed to cope with the postpandemic passenger demand. The multiobjective transit network design and frequency setting problem (TNDFSP) seeks to find optimal routes and their associated frequencies to operate public transport services in an urban area. The objective is to redesign the...journal article 2023
- document
-
Huang, M. (author), Sciacchitano, A. (author), Ferreira, Carlos (author)Wake losses are a critical consideration in wind farm design. The ability to steer and deform wakes can result in increased wind farm power density and reduced energy costs and can be used to optimize wind farm designs. This study investigates the wake deflection of a vertical axis wind turbine (VAWT) experimentally, emphasizing the effect of...journal article 2023
- document
-
Miłobedzka, Aleksandra (author), Ferreira, Catarina (author), Vaz-Moreira, Ivone (author), Calderon Franco, D. (author), Gorecki, Adrian (author), Purkrtova, Sabina (author), Bartacek, Jan (author), Dziewit, Lukasz (author), Weissbrodt, D.G. (author)Antibiotic resistance (AR) is a global problem requiring international cooperation and coordinated action. Global monitoring must rely on methods available and comparable across nations to quantify AR occurrence and identify sources and reservoirs, as well as paths of AR dissemination. Numerous analytical tools that are gaining relevance in...review 2022
- document
-
Ferreira, Cicero (author), Janssen, M.F.W.H.A. (author)In recent years, shared services centers (SSCs) have been central to organizational transformation strategies of many large firms and governments to reduce costs, improve service quality, and innovate services. SSCs are undergoing significant transformations due to the advancement of technologies. To better understand the technologies’ impact on...journal article 2022
- document
-
Hur, C. (author), Ferreira, Carlos (author), Schepers, Gerard (author)Horizontal axis wind turbines (HAWTs) experience yaw misalignments due to the physical limitations of yaw controllers and various novel active yaw controls. Moreover, the motion of floating offshore wind turbines (FOWTs) accelerates yaw misalignment. The blade element momentum (BEM) method is widely used due to its computational efficiency for...journal article 2022
- document
-
Brandetti, L. (author), Avallone, F. (author), De Tavernier, D. (author), LeBlanc, B.P. (author), Ferreira, Carlos (author), Casalino, D. (author)Vertical-axis wind turbines have the potential to be installed nearby urban areas, where noise regulations are a constraint. Accurate modelling of the far-field noise with low-order fidelity methods is essential to account for noise early in the design phase. The challenge for the vertical-axis wind turbine is the unsteady azimuthal variation...journal article 2022
- document
-
Petersen, Steffen E. (author), Friedrich, Matthias G. (author), Leiner, Tim (author), Elias, Matthew D. (author), Ferreira, Vanessa M. (author), Fenski, Maximilian (author), Flamm, Scott D. (author), Fogel, Mark (author), Tao, Q. (author)COVID-19 is associated with myocardial injury caused by ischemia, inflammation, or myocarditis. Cardiovascular magnetic resonance (CMR) is the noninvasive reference standard for cardiac function, structure, and tissue composition. CMR is a potentially valuable diagnostic tool in patients with COVID-19 presenting with myocardial injury and...review 2022
- document
-
Pinto Ribeiro, A. (author), Casalino, D. (author), Ferreira, Carlos (author)We investigate the aerodynamics of a surging wind turbine with numerical simulations based on a free wake panel method. We start by demonstrating the method's capability to simulate a plunging airfoil, which provides some insights that are later used to interpret results of a surging rotor. We then validate the method on a non-surging wind...journal article 2022
- document
-
Brandetti, L. (author), Liu, Y. (author), Mulders, S.P. (author), Ferreira, Carlos (author), Watson, S.J. (author), van Wingerden, J.W. (author)In recent years, industrial controllers for modern wind turbines have been designed as a combined wind speed estimator and tip-speed ratio (WSE-TSR) tracking control scheme. In contrast to the conventional and widely used Kω 2 torque control strategy, the WSE-TSR scheme provides flexibility in terms of controller responsiveness and...journal article 2022
- document
-
Deng, Z. (author), Ferreira, Ana Lucia Morgado (author), Spanjers, H. (author), van Lier, J.B. (author)Abstract: Protein-rich agro-industrial waste streams are high in organic load and represent a major environmental problem. Anaerobic digestion is an established technology to treat these streams; however, retardation of protein degradation is frequently observed when carbohydrates are present. This study investigated the mechanism of the...journal article 2022
- document
-
Ferreira, Joao Dinis (author), Falcao, Gabriel (author), Gomez-Luna, Juan (author), Alser, Mohammed (author), Orosa, Lois (author), Sadrosadati, Mohammad (author), Kim, Jeremie S. (author), Oliveira, Geraldo F. (author), Shahroodi, Taha (author)Data movement between the main memory and the processor is a key contributor to execution time and energy consumption in memory-intensive applications. This data movement bottleneck can be alleviated using Processing-in-Memory (PiM). One category of PiM is Processing-using-Memory (PuM), in which computation takes place inside the memory array...conference paper 2022
- document
-
Ferreira, Bernardo P. (author), Andrade Pires, F. M. (author), Bessa, M.A. (author)This article introduces adaptivity in Clustering-based Reduced Order Models (ACROMs). The strategy is demonstrated for a particular CROM called Self-Consistent Clustering Analysis (SCA), extending it into the Adaptive Self-Consistent Clustering Analysis (ASCA) method. This is shown to improve predictions of Representative Volume Elements ...journal article 2022
- document
-
van der Hoek, D.C. (author), Frederik, J.A. (author), Huang, M. (author), Scarano, F. (author), Ferreira, Carlos (author), van Wingerden, J.W. (author)Dynamic induction control (DIC) has proven to be an effective method of increasing the power output for a wind farm in both simulation studies and wind tunnel experiments. By pitching the blades of a wind turbine periodically, the recovery of the low-velocity wake is accelerated, thereby increasing the energy available to downstream turbines....journal article 2022
- document
-
LeBlanc, B.P. (author), Ferreira, Carlos (author)The blade pitch of a Vertical Axis Wind Turbine can have a profound impact on the aerodynamic loading experienced by the turbine. This in turn impacts the structural loads and the performance of the machine. In order to characterize the effects of changing pitch, studies are conducted with fixed pitch offsets from a neutral pitch position in...journal article 2022
- document
-
Vortex-model-based Multi-objective Optimization of Winglets for Wind Turbines using Machine LearningLeenders, N.A. (author), Yu, W. (author), Gaunaa, Mac (author), Caboni, Marco (author), Ferreira, Carlos (author)Different Design Driving Load constraints (DDLs), are explored in this work to determine under which constraints and conditions a winglet can have an added value to the wind turbine blade design. Multi-objective Bayesian optimization is used to maximize the rotor's power production while minimizing the flapwise DDLs. Surrogate models, created...journal article 2022