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Rijvers, L. (author), Rindt, C. (author), de Keizer, A.C. (author)Photovoltaic-thermal (PVT) collectors are hybrid solar collectors that convert solar and ambient energy into thermal and electrical energy. Integrated PVT-HP, in which PVT collectors are combined with a heat pump, offers an efficient and renewable option to replace conventional fossil fuel-based energy systems in residential buildings. Currently...article 2022
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- Snijder, H.H. (author), Ploegmakers, D. (author), Dekker, R. (author), Maljaars, J. (author) article 2021
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Ho, J.H. (author), Berkhoff, A.P. (author)This paper compares various decentralised control strategies, including structural and acoustic actuator-sensor configuration designs, to reduce noise transmission through a double panel structure. The comparison is based on identical control stability indexes. The double panel structure consists of two panels with air in between and offers the...article 2014
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Verreault, J. (author), Higgins, A.J. (author), Stowe, R.A. (author)The structure of oblique detonation waves stabilized on a hypersonic wedge in mixtures characterized by a large activation energy is investigated via steady method of characteristics (MoC) calculations and unsteady computational flowfield simulations. The steady MoC solutions show that, after the transition from shock-induced combustion to an...conference paper 2013
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Zuada Coelho, B.A. (author), Vervuurt, A.H.J.M. (author), Peelen, W.H.A. (author), Leendertz, J.S. (author)Modular expansion joints are structures that are submitted to severe fatigue load conditions. This may lead to unexpected premature damage of the structure which, besides the economic cost of repair, may limit the regular service of the bridge. To better understand the dynamic behaviour of modular expansion joints, different over rolling tests...article 2013
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Hwang, E. (author), Kim, K.J. (author), Roijers, F. (author), Choi, B.D. (author), TNO Informatie- en Communicatietechnologie (author)In the centralized polling mode in IEEE 802.16e, a base station (BS) polls mobile stations (MSs) for bandwidth reservation in one of three polling modes; unicast, multicast, or broadcast pollings. In unicast polling, the BS polls each individual MS to allow to transmit a bandwidth request packet. This paper presents an analytical model for the...article 2009
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Miedema, H.M.E. (author), Groothuis-Oudshoorn, C.G.M. (author), TNO Bouw en Ondergrond (author)A method for modeling the relationship of polychotomous health ratings with predictors such as area characteristics, the distance to a source of environmental contamination, or exposure to environmental pollutants is presented. The model combines elements of grouped regression and multilevel analysis. The statistical model describes the entire...article 2006
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TNO Defensie en Veiligheid (author), Weerheijm, J. (author), van Doormaal, J.C.A.M. (author), van Breugel, K. (author)The behaviour of dynamically loaded structures, like concrete containment structures and blast resistant control buildings, can be analysed with advanced numerical techniques as well as with less laborious engineering methods. Most used simplified method is the Single Degree of Freedom (SDOF) method, or the so-called Biggs method [1]. This paper...conference paper 2005
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Meuwissen, M.H.H. (author), Veninga, E.P. (author), Tijdink, M.W.W.J. (author), Meijerink, M.G.H. (author), TNO Industrie en Techniek (author)The application of numerical techniques for the design of a low cost pressure sensor is described. The numerical techniques assist in addressing issues related to the thermo-mechanical performance of the sensor. This comprises the selection of the materials and dimensions used for the sensor itself and the substrate on which it is mounted....conference paper 2005
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Ainslie, M.A. (author), Robins, A.J. (author), Simons, D.G. (author), TNO Fysisch en Elektronisch Laboratorium (author)A compilation of analytical formulas is presented, describing ray properties of a family of sediment sound speed profiles. The profiles are described as "generalized power law" profiles because they are generalizations of a similar family of simpler power law profiles considered in earlier work [M. A. Ainslie, J. Acoust. Soc. Am. 96, 2506–2515 ...article 2004
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TNO Bouw (author), Maljaars, J. (author), Stark, J.W.B. (author), Steenbergen, H.M.G.M. (author)Copes and partial endplates influence the resistance to lateral buckling of a steel beam. In order to quantify this influence, numerical research has been carried out with validated models. Full-scale laboratory tests carried out for the validation of the numerical models are described in the Annex to this paper. The research resulted in...article 2004
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Verhoeve, R. (author), Kant, R. (author), Margerie, L. (author), TNO Wegtransportmiddelen (author)Nowadays virtual testing and prototyping are generally accepted methods in crash safety research and design studies. Validated numerical crash dummy models are necessary tools in these methods. Computer models need to be robust, accurate and CPU efficient, where the balance between accuracy and efficiency is depending on the nature of the study...conference paper 2001
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van Nijnatten, P.A. (author), Technisch Physische Dienst TNO - TH (author)Solar and visual light transmittance, colour appearance and other optical properties of glazing, are according to present standards specified for (near-) normal incidence. In general however, these properties are angular dependent. Realistic computation of visual light and solar energy properties therefore requires the angular behaviour to be...article 1999
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Louwers, J. (author), Gadiot, G.M.H.J.L. (author), Brewster, M.Q. (author), Son, S.F. (author), Parr, T. (author), Hanson-Parr, D. (author), Prins Maurits Laboratorium TNO (author)Two simplified modeling approaches are used to model the combustion of hydrazinium nitroformate (HNF), N2H5·C(NO2)3. The condensed phase is treated by high-activation-energy asymptotics. The gas phase is treated by two limit cases: the classical high-activation-energy approximation and the recently introduced low-activation-energy approach. This...article 1999
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Energieonderzoek Centrum Nederland (author), van Hilten, O. (author), Jeeninga, H. (author)-report 1999
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- TNO Fysisch en Elektronisch Laboratorium (author), LoVetri, J. (author), Simons, N.R.S. (author), van Leersum, B.J.A.M. (author) conference paper 1998
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Feenstra, P.H. (author), de Borst, R. (author), TNO Bouw (author)A composite yield function is used to describe the behavior of plain and reinforced concrete in biaxial stress under monotonic loading conditions. A Rankine yield criterion is used to monitor the in-plane tensile stresses and a Drucker Prager yield function controls the compressive stresses. A good agreement with experimental data for biaxial...article 1996
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van de Vorst, E.L.B. (author), Assinck, F.H. (author), de Kraker, A. (author), Fey, R.H.B. (author), van Campen, D.H. (author), TNO Wegtransportmiddelen TNO Bouw (author)This article deals with the experimental verification of the long-term behavior of a periodically excited linear beam supported by a one-sided spring. Numerical analysis of the beam showed subharmonic, quasi-periodic, and chaotic behavior. Further, three different routes leading to chaos were found. Because of the relative simplicity of the beam...article 1996
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Prins Maurits Laboratorium TNO (author), Absil, L.H.J. (author), Kodde, H.H. (author), Weerheijm, J. (author)Noise pollution around military training facilities caused by firing of explosives, artillery or large caliber guns poses a severe problem to neighbouring communities. One possible way to attenuate the blast is the construction of blast walls close to the explosion center. This paper describes a combined experimental and numerical study of the...conference paper 1995
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- Vos, J.B. (author), Prins Maurits Laboratorium TNO (author) doctoral thesis 1987