Grau Moreso, Alba(Universitat Politècnica de València, 2020-05-15)
[ES] En el siguiente trabajo ha sido realizado un análisis teórico del aerogenerador sin aspas inventado recientemente por Vortex Bladeless S.L. La aerodinámica y vibraciones mecánicas en él son estudiadas, así como la ...
[EN] In this paper, a closed-form approximate formula for estimating the maximum resonant response of beam bridges on viscoelastic supports (VS) under moving loads is proposed. The methodology is based on the discrete ...
The advent of high-speed railways has raised many concerns regarding the behaviour of bridges. Particularly, the analysis of the free vibrations generated by each load is of great interest because they can possibly accumulate ...
[EN] In this paper, a numerical Computational Fluid Dynamics (CFD) study is carried out with the purpose of understanding how the injector design may impact on the in-cylinder processes, which cause noise emission. This ...
[EN] Knock phenomenon reduces the thermal efficiency and restricts performance improvement in spark-ignited engines. Reliable and rapid knock recognition is crucial for the engine knock control. Among the wide set of knock ...
This investigation intends to contribute to the problem of train-bridge interaction in high-speed railway lines. For design purposes, most often a numerical model based on constant moving loads is used to reproduce the ...
[EN] A significant number of railway bridges composed by simply-supported (SS) spans are present in existing railway lines. Special attention must be paid to short to medium span length structures, as they are prone to ...
[EN] A novel technique of trapped mass determination, based on the in-cylinder pressure resonance, has been recently published by the authors. However, the method only works when sufficient resonance intensity exists and ...
Doménech Monforte, Alejandro(Universitat Politècnica de València, 2011-09-30)
Se propone una metodología para la convalidación del Método del Amortiguamiento Adicional
propuesto por el Eurocódigo 1 en base a un estudio de sensibilidad sobre los parámetros que
determinan la reducción de la respuesta ...
[EN] This paper presents a new knock model which combines a deterministic knock model based on the in-cylinder temperature and an exogenous noise disturbing this temperature. The autoignition of the end-gas is modelled by ...
[EN] Increasing demands on higher performance and lower fuel consumption and emissions have lead the path for internal combustion engine development; this race is nowadays directly related of CO2 emissions reduction. In ...
Jiménez, Irina Ayelén(Universitat Politècnica de València, 2021-11-24)
[ES] El knock es un fenómeno anormal en los motores de encendido por chispa que debe evitarse para proteger el motor de daños y evitar un ruido excesivo. Los algoritmos de control convencionales retrasan la combustión ...
Moratal Pérez, David; Vallés Lluch, Ana; Bodí, Vicent; Brummer, Marijn Eduard(Institute of Electrical and Electronics Engineers (IEEE), 2011-03)
Reconstruction of magnetic resonance images from data not falling on a Cartesian grid is widely used for fast acquisitions, and it is a Fourier inversion problem typically solved using convolution interpolation, also known ...
[EN] A time-domain nuclear magnetic resonance (TD-NMR) method is proposed to quick and easily determine moisture profiles during cheese drying. The method consists of a combined relaxation analysis, where the magnetization ...
Arias-Gonzalez, J. R.; Nieto-Vesperinas, M.(The Optical Society, 2000-06-01)
[EN] We report numerical simulations of the coupling of waves, either propagating or evanescent, with the eigenmodes of dielectric nanocylinders and nanospheres upon substrates. The multiple interaction of light between ...
[EN] The microstructure of rubber-modified polystyrene after thermal ageing at 90 °C and multiple extrusion was analyzed by time-domain nuclear magnetic resonance (TD-NMR) in a non-destructive manner. The transverse ...
Torregrosa, A. J.; Broatch, A.; Gil, A.; Gómez-Soriano, Josep(Elsevier, 2018-06)
[EN] Diesel combustion noise has become a crucial aspect for the engine manufacturers due to its impact on human health and influence on the customer purchasing decision. The interaction of the pressure waves after mixture ...
[EN] As the focus of research and development is put into innovative combustion concepts with the goal of reducing harmful chemical pollutants while keeping or even improving the efficiency of conventional Diesel combustion, ...
Garcés, Pedro; Glasser, Fred P.; Brew, Daniel R.M.; Zornoza Gómez, Emilio Manuel; Paya Bernabeu, Jorge Juan(Thomas Telford (ICE Publishing), 2011)
The reaction between a spent fluid cracking catalyst (FC3R) residue and portlandite was monitored over 56 days using several material characterisation techniques. The results showed that the residue was heterogeneous and ...
Sherfey, Jason; Ardid-Ramírez, Joan Salvador; Miller, Earl K.; Hasselmo, Michael E.; Kopell, Nancy J.(Elsevier, 2020-09)
[EN] Cognition involves using attended information, maintained in working memory (WM), to guide action. During a cognitive task, a correct response requires flexible, selective gating so that only the appropriate information ...