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Avallone, F. (author), Ragni, D. (author)Noise reduction is one of the major challenges to the societal acceptance of wind turbines. Aerodynamic noise sources are the dominant ones, assuming that mechanical noise can be reduced by correct insulation and periodic maintenance of the gearbox and drive train and by adding insulating material in the wind-turbine nacelle. The dominant...book chapter 2023
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Nunes, Cristiana (author), Godts, Sebastiaan (author), Maria Aguilar Sanchez, Asel (author), Slížková, Zuzana (author), Lubelli, B. (author)The RILEM TC 271-ASC is currently developing a new ageing test to assess the<br/>resistance of porous building materials to salt crystallisation. The new test consists of two phases: salt accumulation and damage propagation. This paper focuses on the salt accumulation phase; this phase should promote salt crystallisation close to the evaporative...conference paper 2021
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Erdös, M. (author)In this thesis, molecular simulations of porous materials are performed, ranging from testing theories using simple models to predicting thermodynamic properties of realistic complex systems. Porous materials such as zeolites, MOFs, and cyclodextrins (CDs) are studied for waste water treatment and energy related applications. The purpose of the...doctoral thesis 2022
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Rubio Carpio, A. (author)Permeable trailing edges are experimentally investigated in this thesis as a mean tomitigate aeroacoustic noise. The first part of the study is devoted to deciphering themechanisms of noise generation involved in these devices. To this aim, trailing-edge inserts are manufactured employing commercially-produced open-cell metallic foams with...doctoral thesis 2021
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Bavykina, A.V. (author)This thesis focuses on the development of functional Porous Organic Frameworks (POFs) for various catalytic applications. POF supported molecular catalysts allow to combine the advantages of both homogeneous and heterogeneous catalysts, offering excellent prospects in the quest to heterogenize homogeneous catalysts. The framework tunability of...doctoral thesis 2017
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Teruna, C. (author)Public annoyances due to noise emission in aviation and wind energy sectors are expected to become more severe in the near future with increasing number of civilian flights and wind turbine installations. Such trend demands for deeper investigations into the noise generation mechanisms and the means to mitigate them. This dissertation addresses...doctoral thesis 2022
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Zamponi, R. (author)The interaction of an airfoil with incident turbulence is an important source of aerodynamic noise in numerous applications, such as turbofan engines, cooling systems for automotive and construction industries, high-lift devices on aircraft wings, and landing gear systems. In these instances, turbulence is generally produced by elements that are...doctoral thesis 2021
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Chao, G. (author), Smeulders, D.M.J. (author), Van Dongen, M.E.H. (author)Acoustic experiments on the propagation of guided waves along water-filled boreholes in water-saturated porous materials are reported. The experiments were conducted using a shock tube technique. An acoustic funnel structure was placed inside the tube just above the sample in order to enhance the excitation of the surface modes. A fast Fourier...journal article 2006
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- Chen, C.H. (author), Kelder, E.M. (author), Schoonman, J. (author) journal article 1996
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Chao, G. (author), Smeulders, D.M.J. (author), Van Dongen, M.E.H. (author)Numerical results for the velocity and attenuation of surface wave modes in fully permeable liquid/partially saturated porous solid plane interfaces are reported in a broadband of frequencies (100?Hz–1?MHz). A modified Biot theory of poromechanics is implemented which takes into account the interaction between the gas bubbles and both the liquid...journal article 2006
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- Huang, X.J. (author), Schoonman, J. (author), Chen, L.Q. (author) journal article 1994
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Matthias, H. (author), Röder, T. (author), Wehrspohn, R.B. (author), Kitzerow, H.S. (author), Matthias, S. (author), Picken, S.J. (author)Active tuning of photonic crystals can be achieved by filling the porous structures with liquid crystals. Here, the director field in macropores was studied by fluorescence confocal polarizing microscopy. For this purpose, the photonic crystal was infiltrated with a glass-forming liquid crystalline polymer, the sample was cooled below the glass...journal article 2005
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- Dekker, J.P. (author), Schoonman, J. (author), Pratsinis, S. (author), Kodas, T.T. (author) journal article 1994
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Yuan, C.A. (author), Van der Sluis, O. (author), Zhang, G.Q. (author), Ernst, L.J. (author), Van Driel, W.D. (author), Flower, A.E. (author), Van Silfhout, B.R. (author)We propose an amorphous/porous molecular connection network generation algorithm for simulating the material stiffness of a low-k material (SiOC:H). Based on a given concentration of the basic building blocks, this algorithm will generate an approximate and large amorphous network. The molecular topology is obtained by distributing these blocks...journal article 2008
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- Dekker, J.P. (author), Van der Put, P.J. (author), Veringa, H.J. (author), Schoonman, J. (author) journal article 1994
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- Huang, X.J. (author), Schoonman, J. (author), Chen, L.Q. (author) journal article 1994
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- Chen, C.H. (author), Kelder, E.M. (author), Schoonman, J. (author) journal article 1997
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Van Dalen, K.N. (author), Drijkoningen, G.G. (author), Smeulders, D.M.J. (author)Pseudo interface waves can exist at the interface of a fluid and a fluid-saturated poroelastic solid. These waves are typically related to the pseudo-Rayleigh pole and the pseudo-Stoneley pole in the complex slowness plane. It is found that each of these two poles can contribute (as a residue) to a full transient wave motion when the...journal article 2010
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Wisse, C.J. (author), Smeulders, D.M.J. (author), Chao, G. (author), Van Dongen, M.E.H. (author)The classical theory of wave propagation in elastic cylinders is extended to poro-elastic mandrel modes. The classical theory predicts the existence of undamped L modes and damped C, I, and Z modes. These waves also appear in poro-elastic mandrels, but all of them become damped because of viscous effects. The presence of the Biot slow bulk wave...journal article 2007
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Van den Berg, A.W.C. (author), Bromley, S.T. (author), Flikkema, E. (author), Wojdel, J. (author), Maschmeyer, T. (author), Jansen, J.C. (author)In order to investigate the technical feasibility of crystalline porous silicates as hydrogen storage materials, the self-diffusion of molecular hydrogen in all-silica sodalite is modeled using large-scale classical molecular-dynamics simulations employing full lattice flexibility. In the temperature range of 700–1200 K, the diffusion...journal article 2004