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van de Ruit, M.L. (author), van der Velden, Levinia L. (author), Onneweer, Bram (author), Benner, Joyce L. (author), Haarman, Claudia J.W. (author), Ribbers, G.M. (author), Selles, R.W. (author)Background: Upper limb impairments in a hemiparetic arm are clinically quantified by well-established clinical scales, known to suffer poor validity, reliability, and sensitivity. Alternatively, robotics can assess motor impairments by characterizing joint dynamics through system identification. In this study, we establish the merits of...journal article 2023
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Adatrao, S. (author), van der Velden, S. (author), van der Meulen, Mark-Jan (author), Cruellas Bordes, Marc (author), Sciacchitano, A. (author)A statistical tool called design of experiments (DOEs) is introduced for uncertainty quantification in particle image velocimetry (PIV). DOE allows to quantify the total uncertainty as well as the systematic uncertainties arising from various experimental factors. The approach is based on measuring a quantity (e.g. time-averaged velocity or...journal article 2023
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Oikonomopoulou, F. (author), Bristogianni, T. (author), van der Velden, M. (author), Ikonomidis, Konstantin (author)An adhesively bonded, solid-glass brick pavilion has been designed by Konstantin Arkitekter as a landmark within the Aasivissuit – Nipisat UNESCO heritage in Greenland. The sculptural glass structure, measuring approximately 3.2 m in diameter × 2 m in height, faces a diverse set of engineering challenges compared to existing adhesively bonded...journal article 2022
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Ahmed, Mohammad Samir (author), van der Velden, Joep (author), Soleymani, A. (author), van den Brom, P.I. (author), Konings, Maaike (author), Itard, L.C.M. (author), Specht, M.M. (author), Sjoer, Ellen (author), Zeiler, Wim (author)Buildings need to be carefully operated and maintained for optimum health, comfort, energy performance, and utility costs. The increasing use of Machine Learning combined with Big Data in the building services sector has shown the potential to bring energy efficiency and cost-effectiveness. Therefore, upskilling and reskilling the current...conference paper 2022
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Romani, G. (author), Casalino, D. (author), van der Velden, Wouter (author)The goal of this paper is to perform a detailed analysis of the hydrodynamic near field and acoustic far field of a NACA 64-618 airfoil with and without serrations. The impact of serrations is investigated across different airfoil angles of attack and serration flap angles. The natural boundary-layer transition cases 6 and 7 of the AIAA...journal article 2021
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Ragusi, Max A.A. (author), Bismeijer, Tycho (author), van der Velden, Bas H.M. (author), Loo, Claudette E. (author), Canisius, Sander (author), Wesseling, Jelle (author), Wessels, L.F.A. (author), Elias, Sjoerd G. (author), Gilhuijs, Kenneth G.A. (author)Purpose: To assess whether contralateral parenchymal enhancement (CPE) on MRI is associated with gene expression pathways in ER+/HER2-breast cancer, and if so, whether such pathways are related to survival. Methods: Preoperative breast MRIs were analyzed of early ER+/HER2-breast cancer patients eligible for breast-conserving surgery included...journal article 2021
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van der Velden, Gijs (author), Fan, D. (author), Staufer, U. (author)Organ-on-chip (OoC) technology is increasingly used for biomedical research and to speed up the process of bringing a drug from lab to the market. The main fluidic components of an OoC device are microfluidic channels and porous membranes arranged in three dimensions. Current chips are often assembled from several parts. In the development...journal article 2020
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Ragni, D. (author), Avallone, F. (author), van der Velden, W.C.P. (author), Casalino, D. (author)Abstract: Pressure fluctuations on the suction side of a NACA 0018 with trailing-edge add-ons are obtained from integration of time-resolved stereoscopic and tomographic particle image velocimetry data and compared to the ones computed from Lattice–Boltzmann simulations. The airfoil is retrofitted with solid and slitted serrated trailing...journal article 2019
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Rego, Leandro (author), Avallone, F. (author), Ragni, D. (author), Casalino, D. (author), van der Velden, Wouter (author)An investigation of the effects of free-stream on jet-installation noise is performed using a numerical solver based on the lattice-Boltzmann method. In order to simulate a realistic configuration, a high-lift wing comprised by a main element and a deployed flap (MD30P30N) is placed in the vicinity of a dual-stream engine (GE90-94B). The engine...conference paper 2019
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Avallone, F. (author), van der Velden, W.C.P. (author), Ragni, D. (author), Casalino, D. (author)Trailing-edge serrations are add ons retrofitted to wind-turbine blades to mitigate turbulent boundary-layer trailing-edge noise. This manuscript studies the physical mechanisms behind the noise reduction by investigating the far-field noise and the hydrodynamic flow field. A conventional sawtooth and a combed-sawtooth trailing-edge serration...journal article 2018
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Lund, Anja (author), van der Velden, N.M. (author), Persson, Nils-Krister (author), Hamedi, Mahiar M. (author), Müller, Christian (author)Conducting fibres and yarns promise to become an essential part of the next generation of wearable electronics that seamlessly integrate electronic function into one of the most versatile and most widely used form of materials: textiles. This review explores the many types of conducting fibres and yarns that can be realised with conjugated...review 2018
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- van der Velden, W.C.P. (author) doctoral thesis 2017
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Merino Martinez, R. (author), van der Velden, W.C.P. (author), Avallone, F. (author), Ragni, D. (author)Trailing-edge serrations are passive noise reduction add-ons widely used in wind-turbine applications. This study presents acoustic beamforming results of microphone array measurements of a cambered airfoil (DU96-W-180) in a closed-section wind-tunnel at a Reynolds number of industrial interest. Two different serration geometries with different...conference paper 2017
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van der Velden, W.C.P. (author), Oerlemans, S. (author)This study investigates the flow topology and noise emission from a wind turbine airfoil with combed serration trailing edge geometry, to understand the noise reduction observed in earlier experiments. A comparison is made to a straight trailing edge and a serrated trailing edge without combs. The different trailing edges are retrofitted to a...conference paper 2017
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van der Velden, W.C.P. (author), Avallone, F. (author), Ragni, D. (author)The relation between the far-field noise and the flow field, in presence of serrated and combed-serrated trailing edge, is studied to explain the associated noise reduction mechanisms. Both serration geometries are retrofitted to a NACA 0018 wing. Computations are carried out by solving the fully explicit, transient, compressible Lattice...conference paper 2017
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Avallone, F. (author), van der Velden, W.C.P. (author), Ragni, D. (author)Far-field noise and flow field over a novel curved trailing-edge serration (named as iron-shaped serration) are investigated. Spectra of the far-field broadband noise, directivity plots and the flow-field over the iron-shaped serration are obtained from numerical computations performed using a compressible Lattice-Boltzmann solver. The new...journal article 2017
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- Avallone, F. (author), van der Velden, W.C.P. (author), Merino Martinez, R. (author), Ragni, D. (author) conference paper 2017
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Ragni, D. (author), Avallone, F. (author), van der Velden, W.C.P. (author)The far-field noise and flow field of a novel curved trailing-edge serration (i.e. iron-shaped) are investigated. Spectra of the far-field broadband noise, directivity plots and the flow-field over the iron-shaped serration are obtained from numerical computations performed using a compressible Lattice-Boltzmann solver. The new design is...conference paper 2017
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van der Velden, N.M. (author)The dissertation ‘Making Fashion Sustainable – The Role of Designers’ describes the PhD research of Natascha M. van der Velden on the envisioned role designers could take responsibility for in the transition towards a more sustainable fashion industry.<br/>The current worldwide textile and apparel system is unsustainable – from both an...doctoral thesis 2016
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- de Lange, Ger (author), van der Velden, WHJ (author), Kopinga, J (author), Hanssen, R.F. (author), Marinkovic, P (author), Buma, J.T. (author), Goorden, N (author), Bakker, MAJ (author) report 2009
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