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Giyanani, A.H. (author), Savenije, F.J. (author), van Bussel, G.J.W. (author)The IEC standards prescribe an inflow wind field based on models with empirical assumptions to perform load calculations. The use of preview wind speed measurements using nacelle-mounted Lidars allows mitigation of structural loads by suggesting appropriate control action. This relationship is affected by uncertainty in site conditions and...journal article 2018
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Savenije, Hubert (author)In groundwater hydrology, two simple linear equations exist describing the relation between groundwater flow and the gradient driving it: Darcy's equation and the linear reservoir. Both equations are empirical and straightforward, but work at different scales: Darcy's equation at the laboratory scale and the linear reservoir at the watershed...journal article 2018
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Zhang, Z. (author), Savenije, Hubert (author)The mixing of saline and fresh water is a process of energy dissipation. The freshwater flow that enters an estuary from the river contains potential energy with respect to the saline ocean water. This potential energy is able to perform work. Looking from the ocean to the river, there is a gradual transition from saline to fresh water and an...journal article 2018
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Kok, D.D. (author), Pande, S. (author), Ortigara, Angela Renata Cordeiro (author), Savenije, Hubert (author), Uhlenbrook, S. (author)Despite Africa controlling the vast majority of the global phosphate it also faces the greatest food shortages - partially due to a lack of access to the fertilizer market. A more accessible source of phosphorus comes from wastewater flows, which is currently lost through the discharge to open surface waters. Analysing the potential...journal article 2018
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Savenije, Hubert (author)Editors of several journals in the field of hydrology met during the General Assembly of the European Geosciences Union (EGU) in Vienna in April 2017. This event was a follow-up of similar meetings held in 2013 and 2015. These meetings enable the group of editors to review the current status of the journals and the publication process, and to...contribution to periodical 2018
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- Schilperoort, B. (author), Coenders-Gerrits, Miriam (author), Luxemburg, W.M.J. (author), JIMENEZ RODRIGUEZ, C.D. (author), Cisneros Vaca, C. (author), Savenije, Hubert (author) journal article 2018
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Bartesaghi, D. (author), Slavney, Adam H. (author), Gelvez Rueda, M.C. (author), Connor, Bridget A. (author), Grozema, F.C. (author), Karunadasa, Hemamala I. (author), Savenije, T.J. (author)Double perovskites, comprising two different cations, are potential nontoxic alternatives to lead halide perovskites. Here, we characterized thin films and crystals of Cs<sub>2</sub>AgBiBr<sub>6</sub> by time-resolved microwave conductance (TRMC), which probes formation and decay of mobile charges upon pulsed irradiation. Optical excitation...journal article 2018
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Abdi-Jalebi, Mojtaba (author), Andaji-Garmaroudi, Zahra (author), Cacovich, Stefania (author), Stavrakas, Camille (author), Philippe, Bertrand (author), Richter, Johannes M. (author), Alsari, Mejd (author), Booker, Edward P. (author), Hutter, E.M. (author), Savenije, T.J. (author)Metal halide perovskites are of great interest for various high-performance optoelectronic applications. The ability to tune the perovskite bandgap continuously by modifying the chemical composition opens up applications for perovskites as coloured emitters, in building-integrated photovoltaics, and as components of tandem photovoltaics to...journal article 2018
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Kumar, V. (author), Savenije, F.J. (author), van Wingerden, J.W. (author)Increasing demands in decentralized power plants have focused attention on Vertical Axis Wind Turbines (VAWTs). However, accessing high range of power from VAWTs is an impediment due to increased loads on the turbine blades. Here, we derive an optimal pitching action that reduces the periodic disturbance on turbine blades of VAWTs without...conference paper 2018
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Maheswari, S. (author), Savenije, T.J. (author), Renaud, N. (author), Grozema, F.C. (author)Two-dimensional (2D) halide perovskites are a class of materials in which 2D layers of perovskite are separated by large organic cations. Conventionally, the 2D perovskites incorporate organic cations as spacers, but these organic cations also offer a route to introduce specific functionality in the material. In this work, we demonstrate, by...journal article 2018
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Bouaziz, L.J.E. (author), Weerts, Albrecht (author), Schellekens, Jaap (author), Sprokkereef, Eric (author), Stam, Jasper (author), Savenije, Hubert (author), Hrachowitz, M. (author)Intercatchment groundwater flows (IGFs), defined as groundwater flows across topographic divides, can occur as regional groundwater flows that bypass headwater streams and only drain into the channel further downstream or directly to the sea. However, groundwater flows can also be diverted to adjacent river basins due to geological features ...journal article 2018
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Bartesaghi, D. (author), Ray, Aniruddha (author), Jiang, Junke (author), Bouwer, Ricardo K.M. (author), Tao, S. (author), Savenije, T.J. (author)Tailoring the physical properties of hybrid lead metal halide APbX<sub>3</sub> perovskites by means of compositional engineering is one of the key factors contributing to the development of highly efficient and stable perovskite solar cells. While the beneficial effects of partial ionic replacement at the A- and X-sites are largely...journal article 2018
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Huijs, Fons (author), Vlasveld, Ebert (author), Gormand, Maël (author), Savenije, F.J. (author), Caboni, Marco (author), LeBlanc, B.P. (author), Ferreira, Carlos (author), Lindenburg, Koert (author)A semi-submersible Tri-Floater has been designed to support a 6 MW vertical axis wind turbine (VAWT) with active blade pitch control. Due to the low centre of gravity and large allowable floater tilt angle, a relatively small floater can be used to support a VAWT. Coupled simulations including hydrodynamics, mooring system, aerodynamics and...journal article 2018
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Nijzink, R.C. (author), Almeida, S. (author), Pechlivanidis, I. G. (author), Capell, R. (author), Gustafssons, D. (author), Arheimer, B. (author), Parajka, J. (author), Freer, J. (author), Han, D. (author), Wagener, T. (author), van Nooijen, R.R.P. (author), Savenije, Hubert (author), Hrachowitz, M. (author)The calibration of hydrological models without streamflow observations is problematic, and the simultaneous, combined use of remotely sensed products for this purpose has not been exhaustively tested thus far. Our hypothesis is that the combined use of products can (1) reduce the parameter search space and (2) improve the representation of...journal article 2018
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Hutter, E.M. (author), Gelvez Rueda, M.C. (author), Bartesaghi, D. (author), Grozema, F.C. (author), Savenije, T.J. (author)Recently, halide double perovskites (HDPs), such as Cs<sub>2</sub>AgBiBr<sub>6</sub>, have been reported as promising nontoxic alternatives to lead halide perovskites. However, it remains unclear whether the charge-transport properties of these materials are as favorable as for lead-based perovskites. In this work, we study the mobilities of...journal article 2018
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Hutter, E.M. (author), Savenije, T.J. (author)The relationship between the dipole moment of the methylammonium cation and the optoelectronic properties of lead halide perovskites remains under debate. We show that both the temperature-dependent charge carrier mobility and recombination kinetics are identical for methylammonium and cesium lead iodide, indicating that the role of the...journal article 2018
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Gelvez Rueda, M.C. (author), Hutter, E.M. (author), Cao, Duyen H. (author), Renaud, N. (author), Stoumpos, Constantinos C. (author), Hupp, Joseph T. (author), Savenije, T.J. (author), Kanatzidis, Mercouri G. (author), Grozema, F.C. (author)The optoelectronic properties of hybrid perovskites can be easily tailored by varying their components. Specifically, mixing the common short organic cation (methylammonium (MA)) with a larger one (e.g., butyl ammonium (BA)) results in 2-dimensional perovskites with varying thicknesses of inorganic layers separated by the large organic cation...journal article 2017
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Guo, Dengyang (author), Bartesaghi, D. (author), Wei, Haotong (author), Hutter, E.M. (author), Huang, Jinsong (author), Savenije, T.J. (author)In view of its band gap of 2.2 eV and its stability, methylammonium lead bromide (MAPbBr<sub>3</sub>) is a possible candidate to serve as a light absorber in a subcell of a multijunction solar cell. Using complementary temperature-dependent time-resolved microwave conductance (TRMC) and photoluminescence (TRPL) measurements, we demonstrate...journal article 2017
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Brenes, Roberto (author), Guo, Dengyang (author), Osherov, Anna (author), Noel, Nakita K. (author), Eames, Christopher (author), Hutter, E.M. (author), Pathak, Sandeep K. (author), Niroui, Farnaz (author), Friend, Richard H. (author), Islam, M. Saiful (author), Snaith, Henry J. (author), Bulović, Vladimir (author), Savenije, T.J. (author), Stranks, Samuel D. (author)Metal halide perovskites are generating enormous excitement for use in solar cells and light-emission applications, but devices still show substantial non-radiative losses. Here, we show that by combining light and atmospheric treatments, we can increase the internal luminescence quantum efficiencies of polycrystalline perovskite films from 1...journal article 2017
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Koster, Randal D. (author), Betts, Alan K. (author), Dirmeyer, Paul A. (author), Bierkens, Marc (author), Bennett, Katrina E. (author), Déry, Stephen J. (author), Evans, Jason P. (author), Fu, Rong (author), Hernandez, Felipe (author), Ruby Leung, L. (author), Liang, Xu (author), Masood, Muhammad (author), Savenije, Hubert (author), Wang, Guiling (author), Yuan, Xing (author)Recent research in large-scale hydroclimatic variability is surveyed, focusing on five topics: (i) variability in general, (ii) droughts, (iii) floods, (iv) land-atmosphere coupling, and (v) hydroclimatic prediction. Each surveyed topic is supplemented by illustrative examples of recent research, as presented at a 2016 symposium honoring the...journal article 2017