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Savazzi, A.C.M. (author), Nuijens, Louise (author), De Rooy, Wim (author), Janssens, M. (author), Siebesma, A.P. (author)This study investigates momentum transport in shallow cumulus clouds as simulated with the Dutch Atmospheric Large Eddy Simulation (DALES) for a 150 3 150 km2 domain east of Barbados during 9 days of EUREC4A. DALES is initialized and forced with the mesoscale weather model HARMONIE-AROME and subjectively reproduces observed cloud patterns....journal article 2024
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Janssens, Floris (author)The construction industry contributes significantly to global emissions. In response to the growing concern about climate change, new methods are being developed to reduce these emissions. Building with timber is one such approach, as it can be CO2 neutral if reforestation is practiced. Timber is a lightweight and flexible material compared to...master thesis 2023
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Janssens, Jules (author)This thesis presents the results of the research into and the development of an international growth strategy for Revolt, a B2B provider of a product-service system for EV charging. <br/><br/>Revolt provides charging points for electric vehicles through a subscription model. For a fixed monthly fee, customers receive a charge point, the...master thesis 2023
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Jansson, F.R. (author), Janssens, M. (author), Grönqvist, Johanna H. (author), Siebesma, A.P. (author), Glassmeier, F. (author), Attema, Jisk (author), Azizi, Victor (author), Satoh, Masaki (author), Sato, Yousuke (author)Small shallow cumulus clouds (less-than 1 km) over the tropical oceans appear to possess the ability to self-organize into mesoscale (10–100 km) patterns. To better understand the processes leading to such self-organized convection, we present Cloud Botany, an ensemble of 103 large-eddy simulations on domains of 150 km, produced by the Dutch...journal article 2023
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Janssens, M. (author), Vilà-Guerau De Arellano, Jordi (author), Van Heerwaarden, Chiel C. (author), de Roode, S.R. (author), Siebesma, A.P. (author), Glassmeier, F. (author)Condensation in cumulus clouds plays a key role in structuring the mean, nonprecipitating trade wind boundary layer. Here, we summarize how this role also explains the spontaneous growth of mesoscale [.O(10) km] fluctuations in clouds and moisture around the mean state in a minimal-physics, large-eddy simulation of the undisturbed period...journal article 2023
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Caspers, M.P.T. (author), Janssens, B. (author), Krishnaswamy Usha, A. (author), Miaskiwskyi, L.T. (author)Let Γ<G be a discrete subgroup of a locally compact unimodular group G. Let m∈C <sub>b</sub>(G) be a p-multiplier on G with 1≤p<∞ and let T <sub>m</sub>:L <sub>p</sub>(G^)→L <sub>p</sub>(G^) be the corresponding Fourier multiplier. Similarly, let Tm| <sub>Γ</sub>:L <sub>p</sub>(Γ^)→L <sub>p</sub>(Γ^) be the Fourier multiplier associated...journal article 2023
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Janssens, M. (author), Vilà-Guerau de Arellano, Jordi (author), van Heerwaarden, Chiel C. (author), van Stratum, Bart J.H. (author), de Roode, S.R. (author), Siebesma, A.P. (author), Glassmeier, F. (author)Numerical simulations of the tropical mesoscales often exhibit a self-reinforcing feedback between cumulus convection and shallow circulations, which leads to the self-aggregation of clouds into large clusters. We investigate whether this basic feedback can be adequately captured by large-eddy simulations (LESs). To do so, we simulate the non...journal article 2023
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Janssens, Luka (author)The Dutch Ministry of Defence fulfils a crucial role in keeping the Dutch kingdom safe. From missions overseas to providing aid in the case of natural disasters, correct and efficient information-flow is critical for their operations. When a situation occurs, everything is dropped to make sure that they can handle it. The Royal Dutch Army, Navy,...master thesis 2022
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Janssens, Mathilde (author)Railway networks are to play an increasingly large role in European transportation. This has boosted the urgency of railway innovations, of which the development of decision support systems for conflict resolution is an important aspect. This research contributes to this development by formulating a suitable mathematical approach for railway...master thesis 2022
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- Janssens, Martin (author), Vilà-Guerau de Arellano, Jordi (author), van Heerwaarden, Chiel C. (author), van Stratum, Bart J.H. (author), Siebesma, A.P. (author), de Roode, S.R. (author), Glassmeier, F. (author) poster 2022
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de Roode, S.R. (author), Siebesma, A.P. (author), Jansson, F.R. (author), Janssens, Martin (author)A new generation of operational atmospheric models operating at horizontal resolutions in the range 200 m ∼ 2 km is becoming increasingly popular for operational use in numerical weather prediction and climate applications. Such grid spacings are becoming sufficiently fine to resolve a fraction of the turbulent transports. Here we analyze Large...journal article 2022
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Janssens, M. (author), Hulshoff, S.J. (author)Data-driven parameterizations offer considerable potential for improving the fidelity of General Circulation Models. However, ensuring that these remain consistent with the governing equations while still producing stable simulations remains a challenge. In this paper, we propose a combined Variational-Multiscale (VMS) Artificial Neural...journal article 2022
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Allegretta, Ignazio (author), Legrand, Stijn (author), Alfeld, M.W.E.M. (author), Gattullo, Concetta Eliana (author), Porfido, Carlo (author), Spagnuolo, Matteo (author), Janssens, Koen (author), Terzano, Roberto (author)Scanning electron microscopy coupled with microanalysis (SEM-EDX) is an important analytical tool for the morphological and chemical characterization of different types of materials. In many applications, SEM-EDX elemental maps are usually used and processed as images, thus flattening and reducing the spectroscopic information contained in...journal article 2022
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Janssens, T.A. (author), Castro, Saullo G.P. (author)Designs taking advantage of fibre-steered laminated manufacturing can optimally vary the stiffness and strength properties of high-performance structural components according to the geometry, loads and boundary conditions. For the stability behaviour of laminates with discontinuities such as local reinforcements and cut-outs, variable stiffness...conference paper 2021
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Janssens, B. (author), Ryvkin, Leonid (author), Vizman, Cornelia (author)We construct an L1-algebra on the truncated canonical homology complex of a symplectic manifold, which naturally projects to the universal central extension of the Lie algebra of Hamiltonian vector fields.journal article 2021
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Janssens, Martin (author), Vilà-Guerau de Arellano, Jordi (author), Scheffer, Marten (author), Antonissen, Coco (author), Siebesma, A.P. (author), Glassmeier, F. (author)Shallow cloud fields over the subtropical ocean exhibit many spatial patterns. The frequency of occurrence of these patterns can change under global warming. Hence, they may influence subtropical marine clouds’ climate feedback. While numerous metrics have been proposed to quantify cloud patterns, a systematic, widely accepted description is...journal article 2021
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Janssens, B. (author), Diez, T. (author), Neeb, Karl-Hermann (author), Vizman, Cornelia (author)Let M be a manifold with a closed, integral (k+1)-form ω, and let G be a Fréchet–Lie group acting on (M,ω). As a generalization of the Kostant–Souriau extension for symplectic manifolds, we consider a canonical class of central extensions of g by R, indexed by Hk−1(M,R)∗. We show that the image of Hk−1(M,Z) in Hk−1(M,R)∗ corresponds to a...journal article 2021
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Janssens, M. (author), de Vries, I. E. (author), Hulshoff, S.J. (author)Temporary stratospheric aerosol injection (SAI) using sulphate compounds could help to mitigate some of the adverse and irreversible impacts of global warming. Among the risks and uncertainties of SAI, the development of a delivery system presents an appreciable technical challenge. Early studies indicate that specialised aircraft appear the...journal article 2020
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Janssens, Thomas (author)Using Variable Angle Tow (VAT) laminates, the stiffness and strength properties of laminates can be continuously varied to arrive at designs that outperform traditional straight fibre composite laminates in cases where the loads are distributed in a non-uniform manner. Cases of particular interest are laminates under buckling conditions or...master thesis 2020
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Janssens, B. (author)There are eight possible Pin groups that can be used to describe the transformation behavior of fermions under parity and time reversal. We show that only two of these are compatible with general relativity, in the sense that the configuration space of fermions coupled to gravity transforms appropriately under the space-time diffeomorphism...journal article 2020