Searched for: faculty:"Civil Engineering and Geosciences"
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Jansen, J.D. (author), Blom, J.C. (author), Free, Renske (author), Kouwenhoven, Paula (author), Fokkema, J.T. (author), de Bruijn, Birgit (author), Smeulders, Julien (author), Drenth, D.J.H. (author), van der Kleijn, Piet Hein (author)
This booklet provides additional information to the work of art 'Soft Layer' located in front of the faculty of Civil Engineering and Geosciences. This piece of art is an initiative of students and alumni of the Mijnbouwkundige Vereeniging and has been revealed on the 24th of February, 2020.
other 2020
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Zhang, Jiayun (author), Chen, Y. (author), Gong, Qingyuan (author), Ding, Aaron Yi (author), Xiao, Yu (author), Wang, Xin (author), Hui, Pan (author)
We perform an initial study on the working time of software developers in IT companies across China and the United States by investigating the timestamps of commit activities on GitHub. We identify three temporal patterns shown in commit activities among these companies. We find that Chinese companies are more likely to follow long working...
journal article 2020
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Jesus de Moraes, R. (author), Hajibeygi, H. (author), Jansen, J.D. (author)
In data assimilation problems, various types of data are naturally linked to different spatial resolutions (e.g., seismic and electromagnetic data), and these scales are usually not coincident to the subsurface simulation model scale. Alternatives like upscaling/downscaling of the data and/or the simulation model can be used, but with...
journal article 2020
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Doropoulos, Christopher (author), Vons, F.J. (author), Elzinga, Jesper (author), ter Hofstede, Remment (author), Salee, Kinam (author), van Koningsveld, M. (author), Babcock, Russell C. (author)
Accelerating the recovery of marine coastal ecosystems is a global challenge that has been attempted on many systems around the world. Restoration efforts have shown varying levels of success at localized-scales, but developing techniques for large-scale application are still in their nascent stage for many systems. For seagrass meadows and...
journal article 2019
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Khabbazan, S. (author), Vermunt, P.C. (author), Steele-Dunne, S.C. (author), Ratering Arntz, A.M. (author), Marinetti, C. (author), van der Valk, D.H. (author), Iannini, L. (author), Molijn, R.A. (author), Westerdijk, Kees (author), van der Sande, Corné (author)
Agriculture is of huge economic significance in The Netherlands where the provision of real-time, reliable information on crop development is essential to support the transition towards precision agriculture. Optical imagery can provide invaluable insights into crop growth and development but is severely hampered by cloud cover. This case study...
journal article 2019
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de Zeeuw, W. (author), Jesus de Moraes, R. (author), Heemink, A.W. (author), Jansen, J.D. (author)
We propose a novel adaptive, adjoint-based, iterative multiscale finite volume (i-MSFV) method. The method aims to reduce the computational cost of the smoothing stage of the original i-MSFV method by selectively choosing fine-scale sub-domains (or sub-set of primary variables) to solve for. The selection of fine-scale primary variables is...
conference paper 2019
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Prinsse, S. (author), Hordijk, D.A. (author), Ye, G. (author), Lagendijk, P. (author), Lukovic, M. (author)
This paper presents an experimental study on the development of material properties over time (up to around 2 years) and the structural behavior of reinforced beams, for two types of alkali-activated concrete (AAC). Compressive strength, flexural strength, tensile splitting strength, elastic modulus, and flexural behavior of reinforced beams...
journal article 2019
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Bristogianni, T. (author), Oikonomopoulou, F. (author), Barou, L. (author), Veer, F.A. (author), Nijsse, R. (author), Jacobs, E.A.M. (author), Frigo, G. (author), Durmisevic, Elma (author), Beurskens, Pieter (author), Lee, Jiyong (author), Rutecki, Katherine (author)
The applicability of glass in structures is continuously ascending, as the transparency and high compressive strength of the material render it the optimum choice for realizing diaphanous structural components that allow for light transmittance and space continuity. The fabrication boundaries of the material are constantly stretching: visible...
journal article 2019
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Diaz Cortes, G.B. (author), Vuik, C. (author), Jansen, J.D. (author)
We study fast and robust iterative solvers for large systems of linear equations resulting from simulation of flow trough strongly heterogeneous porous media. We propose the use of preconditioning and deflation techniques, based on information obtained frfrom the system, to reduce the time spent in the solution of the linear system.An important...
journal article 2018
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Jesus de Moraes, R. (author), Hajibeygi, H. (author), Jansen, J.D. (author)
In data assimilation problems, various types of data are naturally linked to different spatial resolutions (e.g. seismic and electromagnetic data), and these scales are usually not coincident to the subsurface simulation model scale. Alternatives like down/upscaling of the data and/or the simulation model can be used, but with potential loss of...
conference paper 2018
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Diaz Cortes, G.B. (author), Jansen, J.D. (author), Vuik, C. (author)
We explore and develop POD-based deflation methods to accelerate the solution of large-scale linear systems resulting from two-phase flow simulation. The techniques here presented collect information from the system in a POD basis, which is later used in a deflation scheme. The snapshots required to obtain the POD basis are captured in two ways:...
conference paper 2018
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Jesus de Moraes, R. (author), Rodrigues, José R.P. (author), Hajibeygi, H. (author), Jansen, J.D. (author)
A generic framework for the computation of derivative information required for gradient-based optimization using sequentially coupled subsurface simulation models is presented. The proposed approach allows for the computation of any derivative information with no modification of the mathematical framework. It only requires the forward model...
journal article 2018
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Fonseca, R. M. (author), Della Rossa, E. (author), Emerick, A. A. (author), Hanea, R. G. (author), Jansen, J.D. (author)
Since the early 2000's there has been a significant focus from many groups around the world towards the development and application of innovative technologies in order to improve reservoir management strategies and optimize field development plans. Benchmark studies are a very valuable way of evaluating and demonstrating the status and...
conference paper 2018
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van der Meer, J.M. (author), Farajzadeh, R. (author), Rossen, W.R. (author), Jansen, J.D. (author)
Accurate field-scale simulations of foam enhanced oil recovery are challenging, due to the sharp transition between gas and foam. Hence, unpredictable numerical and physical behavior is often observed, casting doubt on the validity of the simulation results. In this paper, a thorough stability analysis of the foam model is presented to validate...
journal article 2018
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Postma, Tom (author), Jansen, J.D. (author)
Over the past decade, a steep increase in the number of seismic events has been observed in the Groningen gas field, the Netherlands. It is generally accepted that these are induced by compaction of the reservoir rock due to extensive depletion, causing a buildup of strain energy in faults that may be released seismically. We address the...
journal article 2018
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Hajibeygi, H. (author), Jansen, J.D. (author), Leeuwenburgh, O. (author), Voskov, D.V. (author)
contribution to periodical 2017
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Fatemi, S.A. (author), Jansen, J.D. (author), Rossen, W.R. (author)
An enhanced-oil-recovery (EOR) pilot test has multiple goals, among them to demonstrate oil recovery, verify the properties of the EOR agent in-situ, and provide the information needed for scale-up to an economic process. Given the complexity of EOR processes and the inherent uncertainty in the reservoir description, it is a challenge to...
journal article 2017
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Insuasty, Edwin (author), van den Hof, P.M.J. (author), Weiland, Siep (author), Jansen, J.D. (author)
In reservoir engineering, it is attractive to characterize the difference between reservoir models in metrics that relate to the economic performance of the reservoir as well as to the underlying geological structure. In this paper, we develop a dissimilarity measure that is based on reservoir flow patterns under a particular operational...
journal article 2017
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Siraj, M.M. (author), van den Hof, P.M.J. (author), Jansen, J.D. (author)
Model-based dynamic optimization of the water-flooding process in oil reservoirs is a computationally complex problem and suffers from high levels of uncertainty. A traditional way of quantifying uncertainty in robust water-flooding optimization is by considering an ensemble of uncertain model realizations. These models are generally not...
conference paper 2017
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Jesus de Moraes, R. (author), Rodrigues, José R P (author), Hajibeygi, H. (author), Jansen, J.D. (author)
An efficient multiscale (MS) gradient computation method for subsurface flow management and optimization is introduced. The general, algebraic framework allows for the calculation of gradients using both the Direct and Adjoint derivative methods. The framework also allows for the utilization of any MS formulation that can be algebraically...
journal article 2017
Searched for: faculty:"Civil Engineering and Geosciences"
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