Searched for: subject%3A%22geometry%22
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van der Weijst, R. (author), van Keulen, T. (author), Willems, F.P.T. (author)
Advanced control concepts are required to maximize the fuel-efficiency of Diesel engines and to comply with emission legislation. The aim of this paper is to develop a controller that fully utilizes the fuel-path and air-path hardware, and is adaptive for real-world disturbances. The control design comprises a feedback control system, which uses...
conference paper 2018
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Otter, G. (author), Dijkhuizen, N. (author), Vosteen, A. (author), Brinkers, S. (author), Gür, B. (author), Kenter, P. (author), Sallusti, M. (author), Tomuta, D. (author), Veratti, R. (author), Cappani, A. (author)
The Global Ozone Monitoring Experiment-2[1] (GOME-2) represents one of the European instruments carried on board the MetOp satellite within the ESA’s “Living Planet Program”. Consisting of three flight models (FM’s) it is intended to provide long-term monitoring of atmospheric ozone and other trace gases over a time frame of 15-20 years, thus...
conference paper 2017
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van der Aa, P. (author), Manie, J. (author)
Finite element analysis (FEA) can be used to design structures. Methods for linear and nonlinear FEA are applied to all kinds of geometries. A simplified geometry structure, or basic element type, sometimes does take into account all the necessary effects for the design purposes. In other analyses more advanced modelling is absolutely necessary....
conference paper 2017
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Bouroullec, R. (author), Weimer, P. (author)
The structural history of the Mississippi Canyon, Atwater Valley, westernDeSoto, and western Lloyd Ridge protraction areas in the northeastern deep-water Gulf of Mexico is of a basin influenced by complex salt tectonics that controlled the formation of intraslope minibasins and sediment distribution. Large volumes of Middle Jurassic...
article 2017
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Criens, C.H.A. (author), van Keulen, T.A.C. (author), Willems, F.P.T. (author), Steinbuch, M. (author)
article 2016
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Bonsma, P. (author), Bonsma, I. (author), Zayakova, T. (author), van Delft, A. (author), Sebastian, R. (author), Böhms, M. (author)
The Open Standard Concept Modelling Ontology (CMO) with Extensions makes it possible to store parametric modelling semantics and parametric geometry in a Semantic Web environment. The parametric and geometrical part of CMO with Extensions is developed within the EU project Proficient. The nature of the Semantic Web with support for multiple...
conference paper 2015
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Swamy, M. (author), Shoeibi Omrani, P. (author), González Díez, N. (author)
Gas transport in corrugated pipes often exhibit whistling behavior, due to periodic flow-induced pulsations generated in the pipe cavities. These aero-acoustic sources are strongly dependent on the geometrical dimensions and features of the cavities. As a result, uncertainties in the exact shape and geometry play a significant role in...
conference paper 2015
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Ferrer, A. (author), de Hair-Buijssen, S.H.H.M. (author), Zander, O. (author), Fredriksson, R. (author), Schaub, S. (author), Nuss, F. (author), Caspar, M. (author)
Pedestrians and cyclists are the most unprotected road users and their injury risk in case of accidents is significantly higher than for other road users. The understanding of the influence and sensitivity between important variables describing a pedestrian crash is key for the development of more efficient and reliable safety systems. This...
article 2015
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Moreau, L. (author), Hunter, A.J. (author), Velichko, A. (author), Wilcox, P.D. (author)
In nondestructive testing, being able to remotely locate and size defects with good accuracy is an important requirement in many industrial sectors, such as the petrochemical, nuclear, and aerospace industries. The potential of ultrasonic guided waves is well known for this type of problem, but interpreting the measured data and extracting...
article 2014
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de Jong, A.T. (author), Golliard, J. (author)
An investigation is performed on the scalability of broadband noise sources from separated flows in internal pipe systems. Broadband sources from for example wellhead chokes, bends and valves can potentially excite subsea manifolds through fluid acoustic coupling and fluid structural coupling. The focus of the current work is evaluation and...
conference paper 2013
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Schmettow, M. (author), Vos, W. (author), Schraagen, J.M. (author)
Usability testing is recognized as an effective means to improve the usability of medical devices and prevent harm for patients and users. Effectiveness of problem discovery in usability testing strongly depends on size and representativeness of the sample. We introduce the late control strategy, which is to continuously monitor effectiveness of...
article 2013
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Fokker, P.A. (author), Wassing, B.B.T. (author), van Leijen, F.J. (author), Hanssen, R.F. (author), Nieuwland, D.A. (author)
This paper reports a study on the use of satellite radar data to constrain the subsurface model parameters of the Bergermeer gas field. Using PSI (Persistent Scatterer InSAR) technology, ascending and descending data were applied in line-of-sight geometry, i.e., without first unravelling the horizontal and vertical components of the signal. The...
conference paper 2013
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van Es, S.H.J. (author), Kolstein, M.H. (author), Pijpers, R.J.M. (author), Bijlaard, F.S.K. (author)
This paper presents the results of extensive measurements on weld toe geometry of as-welded and TIG-dressed butt welded connections in high strength steels S460, S690 and very high strength steels S890 and S1100. Descriptions of the measurement techniques and data analysis are presented. Four weld toe parameters have been formulated to...
article 2013
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van Kuilenburg, J. (author), Masen, M.A. (author), van der Heide, E. (author)
In this work, analytical models available from contact mechanics theory having a proven record in mechanical engineering were used to develop a model predicting the friction behavior of human skin. A multi-scale contact model was developed in which the contact parameters are calculated at three levels, each level characterized by its elastic...
conference paper 2012
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Teland, J.A. (author), van Doormaal, J.C.A.M. (author)
Blast waves from explosions can cause lethal injuries to humans. Development of injury criteria has been ongoing for many years, but with the main focus on free field conditions. However, with terrorist actions as a new threat, explosions in urban areas have become of much more interest. Urban areas provide a complex environment for blast wave...
conference paper 2012
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Evers, W.J. (author), Besselink, I.G.M. (author), Teerhuis, A.P. (author), Nijmeijer, H. (author)
There is a need to further improve driver comfort in commercial vehicles. The variable geometry active suspension offers an interesting option to achieve this in an energy efficient way. However, the optimal control strategy and the overal performance potential remains unclear. The aim of this paper is to quantify the level of performance...
article 2011
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Offermans, P. (author), Crego-Calama, M. (author), Brongersma, S.H. (author), IMEC/Holst Centre, High Tech Campus 31, 5656AE Eindhoven, Netherlands (author)
Nanowires show great promise for use in next generation (bio-)chemical sensing devices because of their high surface to volume ratio enabling efficient modulation of their current by charges or dipoles present at the surface. Here, we present a gas sensing device based on vertical InAs nanowire arrays grown without metal catalyst particles. The...
conference paper 2010
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Nakiboglu, G. (author), Belfroid, S.P.C. (author), Willems, J.F.H. (author), Hirschberg, A. (author)
Whistling behavior of two geometrically periodic systems are investigated: corrugated pipes and a multiple side branch system. In both systems frequency (Helmholtz number) is a non-decreasing piecewise constant function of the Mach number, whose increase on average is approximately linear. The plateaus, lock-in frequencies, of this piecewise...
article 2010
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Singh, M.K. (author), Galaktionov, O.S. (author), Meijer, H.E.H. (author), Anderson, P.D. (author), TNO Industrie en Techniek (author)
The mapping method has proven its efficiency as an analysis and optimization tool for mixing in many different flow devices. In this paper, we present a new approach to compute the coefficients of the distribution matrix, which is, both in terms of computational speed and complexity, more easy to implement as compared to the original approach...
article 2009
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TNO Defensie en Veiligheid (author), ter Haar, F.B. (author)
In this thesis, we measure 3D shapes with the use of 3D laser technology, a recent technology that combines physics, mathematics, and computer science to acquire the surface geometry of 3D shapes in the computer. We use this surface geometry to fully reconstruct real world shapes as computer models, and to analyze the characteristics and...
doctoral thesis 2009
Searched for: subject%3A%22geometry%22
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